A study was conducted among 554 under-five children to investigate the association between place of delivery and stunting. The result indicated that 67 children were stunted from 156 home delivered children, 20 were stunted from 278 health center delivered and 12 from hospital delivered children were stunted from 110 children. Test the hypothesis that place of delivery and stunting have association (Use α = 0.05 and show all the steps)
Q: Average IQ scores for young school children are known to be 100 (SD = 15). However, the literature…
A:
Q: A study was conducted to reassess boarding times of flights. The consulting firm given the task of…
A: Given that
Q: In a study on sodium-restricted diets, the researchers observed 50 patients with hypertension.…
A: The claim is that the proportion of patients on sodium-restricted diets is higher among patients…
Q: In a study of red/green color blindness, 700700 men and 26502650 women are randomly selected and…
A: Given : Claim : Men have a higher rate of red/green color blindness than women.
Q: What is the Sample Mean Difference
A: A research team is interested in investigating the effectiveness of a new medication intended to…
Q: A clinical trial is conducted to compare an experimental medication to placebo to reduce the…
A: From the given information , following table can be formulated which showing the numbers based on…
Q: Are couples that live together before they get married less likely to end up divorced within five…
A: The question is about hypo. testing Given : Total no. of couples who lived together before they get…
Q: This study found a null effect (no impact of sucrose on children's behavior). There were only 48…
A: Given : This study found a null effect (no impact of sucrose on children's behavior). There were…
Q: A certain prescription drug is known to produce undersirable side effects in 30% of all patients who…
A: From the given information, a sample of 6 patients using drug and the percent of producing…
Q: A group of 60 volunteers who do not regularly exercise are randomly assigned to one of two fitness…
A: Observational study: In this case, the individuals of the study are observed by the researcher. The…
Q: Researchers selected 894 patients at random among those who take a certain widely-used prescription…
A: The question is about hypothesis testing.Given :Population proportion patients complained of flulike…
Q: A developmental psychologist is interested in whether children (age 5 and 11 years) differ in their…
A: We have given data about the liking of jazz music and the age of a child as follows: Age of…
Q: A study was performed to test the effectiveness of aspirin in the treatment of strokes. There were…
A: Given there were 155 patients in the study. A random sample of 78 of these patients were placed in…
Q: A recent study at a college classified a group of 200 students according to whether they attended…
A: Given information: The total number of students is N = 200. It is given that 93 students attended…
Q: The inflammation caused by osteoarthritis of the knee can be very painful and can inhibit movement.…
A: Given that: Leech (Group 1): x¯1=52.4s1=13.9n1=24 Topical gel (Group 2): x¯2=52s2=16.6n2=27
Q: months
A: Given, For asprin group : n1 = 78 x1= 63 For the control group: n2=77 x2=43
Q: A study done by Dr. S. Friedler, a trained mime and a physician, found evidence that being…
A: We want to find the a. State the null and alt hypotheses. b. Find df and critical value for the…
Q: A new hypothesis on the origin of schizophrenia says that susceptibility to the illness can be…
A: The data is measured for twins and measured on an interval scale.
Q: A researcher is looking at the relationship between playing contact sports in high school and…
A: The question is about hypo. testing Given : Randomly selected no. of men who played contact sports (…
Q: The definition and composition of families has evolved over the past several decades. The Pew…
A: This is a statistical test to determine whether there is difference between two proportions. The…
Q: Androstenedione (andro) is a steroid that is thought by some athletes to increase strength.…
A: Suppose the researchers wanted to conduct a hypothesis test to compare the increase in lat pull down…
Q: A hospital conducted a study of the waiting time in its -emergency room. The hospital has a main…
A: Given data
Q: A random sample of 148 small businesses was taken. During a 5 year time frame, 16 of the 106…
A: Businesses headed by men : total = 106 Failed = 16 success = 90 Businesses headed by women: total…
Q: Does Aspirin Prevent Heart Disease? In a trial designed to test the effectiveness of aspirin in…
A: a)State the test hypotheses.Null hypothesis:H0 : p1 = p2Alternative hypothesis:H1 : p1 ≠ p2
Q: a recent study, investigators were interested in examining the association between blood glucose…
A: Given: n(total) = 418 n(Hyperglycemia) = 280 n(dead | hyperglycemia) = 80 n(Hypoglycemia) = 138…
Q: According to phys.org, Black and Hispanic females are underrepresented in STEM programs compared to…
A: Given that,sample one, x1 =12, n1 =300, p1= x1/n1=0.04n1*p1>5, 300*0.04> 5 =>…
Q: Are couples that live together before they get married more likely to end up divorced within five…
A: The null hypothesis is H0:p1=p2 and the alternative hypothesis is Hα:p1≠p2 Decide on the…
Q: om among those who take a certain widely-used prescription drug daily. In a clinical trial, 24 out…
A: Answer Given The population proportion [p0] = 0.024The favorable cases [x] = 24The sample size [n]…
Q: A genetic theory says that a cross between two pink owering plants will produce red owering plants a…
A: Solution : Given that, p=0.25 n=100 x=number of favorable outcome=31 p^=xn=31100=0.31 The…
Q: More than 10% of people carry the parasite Toxoplasma gondii. The life-long presence of Toxoplasma…
A: Given the table which shows the number of drivers who are infected and not infected. Please find the…
Q: A research team is interested in Parent-Child Interaction Therapy (PCIT) maintain effect in…
A: x y d d2 4 5 -1 1 2 4 -2 4 5 6 -1 1 3 3 0 0 7 4 3 9 6 4 2 4 5 6 -1 1 7 4 3 9 6 7…
Q: In clinical trials of Nasonex, 3774 adult and adolescent allergy patients were randomly divided into…
A: The random variable experience of headache as a side effect is normally distributed. There are two…
Q: A study enrolling 30 patients diasnosed with keratitis sicca (KCS) was conducted to determine the…
A: Given information: Patient Number Hypo tears Oker-Rinse d d-d¯2 1 15 8 7 25.33444444 2 10 3 7…
Q: Your research group wants to explore the possibility that a particular kind of Tibetan meditation…
A: Different null and alternative hypotheses can be defined as given below: Two tailed test: Left tail…
Q: A new cataracts removal procedure for persons older than 60 years of age with degrading vision from…
A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you.…
Q: A recent poll of 2400 randomly selected 18-25-year-olds revealed that 278 currently use marijuana or…
A: Here, z test for population proportion will be used because standard deviation is not given. First…
Q: Suppose a group of researchers attempt to confirm the result of "Distractions in Everyday Driving,"…
A: Given The data is as follows: Let sample 1 represent male drivers. Let sample 2 represent female…
Q: Hormal Bone Osteopenia | Osteoporosis 1200 1000 890 1000 1100 650 980 700 1100 900 800 900 750 500…
A: One way ANOVA : One-Way ANOVA ("analysis of variance") examines the suggests that of 2 or a lot of…
Q: In a study conducted by the U.S. Department of Health and Human Services, a sample of 546 boys aged…
A: Given:: In a study conducted by the U.S. Department of Health and Human Services, a sample of 546…
Q: A group of toxicologists investigated the impact of exposure to low oxygen on the mortality of rice…
A: For first experiment, sample size n1 = 31421, number of rice weevils found dead, X1 = 31386 For…
Q: A recent study investigated the association between sudden cardiac death and smoking history in…
A: N=180
Q: A developmental psychologist is interested in whether children (age 5 and 11 years) differ in their…
A: We have given data about the liking of jazz music and the age of a child as follows: Age of…
Q: A total of 150 participants are selected for a study of risk factors for cardiovascular disease. At…
A: Let, n= 150 = total number of participants, At baseline (study start), 24 are classified as…
Q: Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients…
A: Pain Free Yes No Treatment 15 61 76 Control 7 73 80 Total 22 134 156 a) The correct…
Q: Average IQ scores for young school children are known to be 100 (SD = 15). However, the literature…
A: A. If the level of significance was set at p<0.05, then critical Z-score would be, Here, the…
Q: Guéguen and Jacob (2012) asked waitresses to wear different colored T-shirts on differentdays for a…
A: Independent or explanatory variable is the variable which does not depend on any other variable and…
Q: followed from admission to the hospital until the end of the study. The study population included…
A: Solution:- ->In a recent study, investigators were interested in examining the association…
Q: To determine whether acupuncture relieves migraine pain, researchers conducted a randomized…
A: For the given data Perform Chi square test
Q: Twenty middle-aged men with glucose readings between 90 milligrams per deciliter and 120 milligrams…
A: Given Data : Group A (placebo) reduction (in milligrams per deciliter): 12, 8, 17, 7, 20, 2, 5, 9,…
A study was conducted among 554 under-five children to investigate the association between place of delivery and stunting. The result indicated that 67 children were stunted from 156 home delivered children, 20 were stunted from 278 health center delivered and 12 from hospital delivered children were stunted from 110 children. Test the hypothesis that place of delivery and stunting have association (Use α = 0.05 and show all the steps)
Step by step
Solved in 3 steps with 1 images
- A 9-year study was conducted in Sweden, comparing 21,088 women who had mammograms with 21,195 who did not. Of the women who underwent screening, 63 died of breast cancer, compared with 66 deaths among the control group. (New York Times, Dec 9, 2001). Do these results support the effectiveness of regular mammograms in preventing deaths from breast cancer? Evaluate with a TI 83.A research study was conducted about gender differences in 'sexting'. The researcher believed that the proportion of girls involved in 'sexting' is different from the proportion of boys involved. The data collected in the spring of among a random sample of middle and high school students in a large school district in is summarized next: out of 380 females 43 sent 'sexts' and out of 410 males 64 sent 'sexts'. Is the proportion of girls sending sexts different from the proportion of boys 'sexting'? Choose the appropriate procedure. Procedure: Assumptions: (select everything that applies) Population standard deviations are known Normal populations Sample sizes are both greater than 30 Population standard deviation are unknown but assumed equal Paired samples Population standard deviation are unknown Simple random samples The number of positive and negative responses are both greater than 10 for both samples Independent samplesAverage IQ scores for young school children are known to be 100 (SD = 15). However, the literature indicates that children’s intelligence may be decreased if their mothers have German measles during pregnancy. Using hospital records, a researcher obtained a sample of n = 25 school children whose mothers all had German measles during their pregnancies. Do the data indicate that children born to mothers who had German measles during the pregnancy have significantly lower IQ scores than typical young school children? DATA (Fictional) child IQ scr 1 91 2 111 3 97 4 95 5 96 6 95 7 95 8 96 9 94 10 93 11 95 12 92 13 96 14 91 15 97 16 93 17 92 18 99 19 93 20 97 21 85 22 94 23 96 24 95 25 96 Looking at the research scenario for this lab, you will see that it says, “ literature indicates that children’s intelligence may…
- A research team is interested in investigating the effectiveness of a new medication intended to reduce resting heart rate (beats per minute, BPM) in overweight patients. In order to test the medication, the researcher organizes a clinical trial with participants randomly assigned to receive either the new medication or a placebo. Suppose the following table represents the heart rates for a SRS from both groups. Data for the placebo group are {71, 71, 68, 67, 68, 69, 70, 70, 69, 72, 73} Data for the treatment group are {67, 66, 64, 64, 65, 64, 59, 63, 71, 64} Sample standard deviation for the placebo group is: 1.834 Sample standard deviation for the treatment group is: 3.057 What is the confidence interval? (alpha=0.05) Group of answer choices (0.969492 to 9.266508) (2.31312 to 7.92288) (2.598132 to 7.637868) (-1.796934 to 12.032934)A research team is interested in investigating the effectiveness of a new medication intended to reduce resting heart rate (beats per minute, BPM) in overweight patients. In order to test the medication, the researcher organizes a clinical trial with participants randomly assigned to receive either the new medication or a placebo. Suppose the following table represents the heart rates for a SRS from both groups. Data for the placebo group are {71, 71, 68, 67, 68, 69, 70, 70, 69, 72, 73} Data for the treatment group are {67, 66, 64, 64, 65, 64, 59, 63, 71, 64} Sample standard deviation for the placebo group is: 1.834 Sample standard deviation for the treatment group is: 3.057 What is the Standard Error of the Mean Difference? (alpha=0.05) Group of answer choices 1.834 1.240 1.114 3.057A research team is interested in investigating the effectiveness of a new medication intended to reduce resting heart rate (beats per minute, BPM) in overweight patients. In order to test the medication, the researcher organizes a clinical trial with participants randomly assigned to receive either the new medication or a placebo. Suppose the following table represents the heart rates for a SRS from both groups. Data for the placebo group are {71, 71, 68, 67, 68, 69, 70, 70, 69, 72, 73} Data for the treatment group are {67, 66, 64, 64, 65, 64, 59, 63, 71, 64} Sample standard deviation for the placebo group is: 1.834 Sample standard deviation for the treatment group is: 3.057 What is the test statistics (tstat)? (alpha=0.05) Group of answer choices 4.127 2.791 1.674 4.594
- According to the National Health and Nutrition Examination Survey (NHANES) sponsored by the U.S. government, a random sample of 712 males between 20 and 29 years of age and a random sample of 1,001 males over the age of 75 were chosen and the weight of each of the males were recorded (in kg). Do the data provide evidence that the younger male population weighs more (on average) than the older male population? Use “Y” for ages 20-29 and “S” for ages 75+. It was found that x̅Y=83.4, sY=18.7, x̅S=78.5, and sS=19.0. a)Suppose the test statistic is t = 2.398. What is the associated p-value? Group of answer choices 0.001 < p-value < 0.002 0.005 < p-value < 0.01 0.01 < p-value < 0.02 0.0005 < p-value < 0.001 b) Suppose the p-value is 0.02 < p-value < 0.04. At α = 0.10 what is the appropriate conclusion to make? Group of answer choices Fail to reject H0 and conclude that the mean weight of all males ages 20-29 is greater than the mean weight of all…A university researcher knowledgeable in Chinese medicine conducted a study to determine whether acupuncture can help reduce cocaine addiction. In this experiment, 18 cocaine addicts were randomly assigned to one of three groups of 6 addicts per group. One group received 10 weeks of acupuncture treatment in which the acupuncture needles were inserted into points on the outer ear where stimulation is believed to be effective. Another group, a placebo group, had acupuncture needles inserted into points on the ear believed not to be effective. The third group received no acupuncture treatment; instead, addicts in this group received relaxation therapy. All groups also received counseling over the 10-week treatment period. The dependent variable was craving for cocaine as measured by the number of cocaine urges experienced by each addict in the last week of treatment. The following are the results. Acupuncture + Counseling Placebo + Counseling Relaxation Therapy + Counseling…More than 10% of people carry the parasite Toxoplasma gondii. The life-long presence of Toxoplasma cysts in neural and muscular tissues leads to prolongation of reaction times in infected subjects. The following table gives data from Prague on 15- to 29-year-old drivers who had been and had not been involved in accidents. The table also gives the number of drivers who were infected with Toxoplasma gondii and who were uninfected. Infected Uninfected Drivers with accidents 21 38 Drivers without accidents 38 211 Source: Flegr. J Havlicek, J., Kodym, P. Malý, M. & Smahel, Z. (2002). Increased risk of traffic accidents in subjects with latent toxoplasmosis: a retrospective case- control study. BMC infectious diseasex, 2, 11. https://doi.org/10.1186/1471-2334-2-11 Complete the sentences to form the correct statements identifying the explanatory and response variables. Select from here: infection status. The explanatory variable is place of living. accident state. The response variable is age…
- Are couples that live together before they get married just as likely to end up divorced within five years of marriage compared to couples that live apart before they get married? 268 of the 674 couples from the study who lived together before they got married were divorced within five years of marriage. 173 of the 405 couples from the study who lived apart before they got married were divorced within five years of marriage. What can be concluded at the = 0.05 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean t-test for the difference between two independent population means z-test for the difference between two population proportions t-test for the difference between two dependent population means The null and alternative hypotheses would be: Select an answer μ1 p1 Select an answer ≠ > < = Select an answer p2 μ2 Select an answer μ1 p1 Select an answer < = > ≠ Select…According to the National Health and Nutrition Examination Survey (NHANES) sponsored by the U.S. government, a random sample of 712 males between 20 and 29 years of age and a random sample of 1,001 males over the age of 75 were chosen and the weight of each of the males were recorded (in kg). Do the data provide evidence that the younger male population weighs more (on average) than the older male population? Use “Y” for ages 20-29 and “S” for ages 75+. It was found that x̅Y=83.4, sY=18.7, x̅S=78.5, and sS=19.0. A) What are the correct null and alternative hypotheses? B)What is the parameter of interest? The difference between the mean weight of all males ages 20-29 and the mean weight of all males ages 75+ The mean weight (in kg) The difference between the mean weight of the sample of males ages 20-29 and the mean weight of the sample of males ages 75+ The mean difference between the weights of males ages 20-29 and males ages 75+ c)Is the randomness condition met for…Photon is a training device that is designed to improve a user's reaction time. Similar devices have been criticized for being too easy to master, but the makers of Photon say that their device is built to give most users room to improve. The makers say that even among professional athletes, the proportion, , who can score the top ranking of "light speed" is less than 16%. A random sample of 110 professional athletes is chosen, and 14 score a ranking of "light speed" while using the device.Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the level of significance, to support the claim that the proportion of all professional athletes who can score a ranking of "light speed" is less than 16% .