In an experiment on immunisation of catt from tuberculosis the following results were obtained: Affected Not affected Inoculated Not Inoculated 12 26 16 Discuss the effect of vaccine in controlling susceptibility to tuber- culosis.
Q: An ANOVA is used to evaluate the differences among 2 treatment conditions with a sample of n = 27…
A: Given: Number of treatments k=2 Number of observations n=27
Q: You are conducting a study to see if the accuracy rate for fingerprint identification is…
A:
Q: A case–control study of patients on antihypertensive drugs related an increased risk of myocardial…
A: As we know that formula for c.i is given by CI = (p1-p2) ± z*se
Q: Posttraumatic stress disorder (PTSD] following 9/11. Levitt, Malta, Martin, Davis, and Cloitre…
A: Introduction: The independent samples repeated-measures design is used while comparing two or more…
Q: In a clinical trial, 27 out of 875 patients taking a prescription drug daily complained of flulike…
A:
Q: The table to the right gives the average sales tax rate (state plus local) in six East coast east…
A: The tables gives the average sales tax rate in six east coast states and six western states. We have…
Q: To combat antibiotic resistance, the Quality Improvement Consortium recommends a throat swab to…
A: Here, the test is left tailed.
Q: You are conducting a study to see if the accuracy rate for fingerprint identification is…
A:
Q: King Tut was an ancient Egyptian ruler whose tomb was discovered and opened in 1923. Legend has it…
A: From the given information, Lets significance (α) = 0.05. Hypothesis test:
Q: An experiment was conducted using a randomized block design. The data from the experiment are…
A: Given the data asTreatmentBlock123135624283238
Q: Recent incidents of food contamination have caused great concern among consumers. The article “How…
A: What is asked in the question is power of the test which is given by Power = 1-beta
Q: In a leg ulcer trial, time to complete ulcer healing (weeks) between intervention and control groups…
A: In this problem, the Kolmogorov-Smirnov test is used to test the normality of the data.
Q: The paper "Supervised Exercise Versus Non-Supervised Exercise for Reducing Weight in Obese Adults†…
A: Given the table of experimental.....
Q: OxyContin is a drug used to treat pain, but it is well know for its addictiveness and danger. I n a…
A: Claim: The difference between the rates of nausea for those treated with Oxycontin and those given a…
Q: A study (J. Amer. Med. Assoc., vol. 284, p. 831, 2000) considered whether daily consumption of 1200…
A: Introduction: Denote p as the true proportion of subjects for whom garlic was more effective than…
Q: The article “Treadmill Exercise and Resistance Training in Patients With Peripheral Arterial Disease…
A: To determine: Find a 95% confidence interval for the difference in mean distance walked between the…
Q: Nonparametric: A small study is conducted to compare birth weight in babies born to mothers who do…
A: Non smoker = sample (1) = n1 = 6 Heavy smoker = sample (2) = n2 = 8 First we put both samples…
Q: An independent-measures research study uses a total of 40 participants to compare two treatment…
A: Given Total participants =40
Q: The article “Treadmill Exercise and Resistance Training in Patients With Peripheral Arterial Disease…
A: The claim is that the mean distance walked for patients using a treadmill is greater than the mean…
Q: Go to Youtube and search for. We Were There - Polio You should see a video put out by the CDC. About…
A: Solution :
Q: a. Use an ANC whether ther among the tl the samples average of tl b. Calculate m² study.
A: From the given information we have, x1=2 , x2=3 , x3=4n1=10 , n2=10 , n3=10s12=2.67 , s22=2.00 ,…
Q: The following data were obtained from an independent-measures study comparing three treatment…
A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…
Q: Dexamethasone and IQ. In the paper “Outcomes at School Age After Postnatal Dexamethasone Therapy for…
A: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have solved…
Q: You are conducting a study to see if the accuracy rate for fingerprint identification is…
A: Given, The sample proportion is,
Q: The following data were obtained from a an experiment comparing three different treatment…
A: Steps to perform repeated measures design: Go to Stat>ANOVA>General linear Model>Fit…
Q: In a recent year, 27% of all cars purchased were black in color. A manufacturer thinks that…
A: Given Information: Population proportion (p) = 0.27 Sample proportion (px) = 70/300 = 0.233 Sample…
Q: You are conducting a study to see if the accuracy rate for fingerprint identification is…
A:
Q: a study of 420,091 cell phone users, 129 subjects developed cancer of the brain or nervous system.…
A:
Q: For an ANOVA comparing three treatment conditions, what is stated by the alternative hypothesis…
A: Null hypothesis H0:u1=u2=...=un that is H0:There are no differences between any of the population…
Q: In a completely randomized experimental design, three brands of paper towels were tested for their…
A: Anova: Single Factor SUMMARY Groups Count Sum Average Variance x 4…
Q: In a completely randomized experimental design, three brands of paper towels were tested for their…
A: The random variable is ability to absorb water. There are 3 independent samples which are 3 brands…
Q: Twenty-four mice are inoculated with three strains of typhoid. The number of days until death for…
A: given data, inocaluted with strains of typhoid =3 total sample size =n=24number of days untik death…
Q: In a completely randomized experimental design, three brands of paper towels were tested for their…
A: For the given data Perform Anova single factor
Q: 6. True or False? A clinical trial is conducted to compare an experimental medication to placebo to…
A: The value of p1 and p2 are obtained below: Risk ratio is, RR = p1/ p2 = 0.6/0.3 = 2. The confidence…
Q: We wish to test of hypothesis H0 : μ1 = μ2 = μ3 vs H1 : Not all group means are the same. Use the…
A: Given information:k= 3 Groups n= 400 Total observation Inference One way ANOVA
Q: Open et up the ANOVA table for this problem. Show the entries to 2 decimals, if necessary.…
A: System ASystem BSystem CController 1161518Controller 2141415Controller 3111216Controller…
Q: 27. Lower Limb Surgery. The study "Intrathecal Sufentanil ver- sus Fentanyl for Lower Limb…
A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…
Q: Twenty-four mice are inoculated with three strains of typhoid. The number of days until death for…
A: The information provided in the question are as follows :- Sample size (n) = 24 Types of typhoid…
Q: In a completely randomized experimental design, three brands of paper towels were tested for their…
A: In order to determine whether there is significant difference in the mean absorbency rating of three…
Q: Gastric freezing was once a recommended treatment for ulcers in the upper intestine. Use of gastric…
A: A. The following hypothesis can be formed H0: p1=p2HA: p1≠p2 The test statistic is given as…
Q: In a clinical trial for the use of Medicine X, patients were coded respectively. The assignment of…
A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: Assuming the populations of measurements to be ap- proximately normally distributed, test the…
A: A (X) B (Y) (X-xbar)^2 (y-ybar)^2 0.86 0.87 0.01310 0.03956 0.82 0.74 0.00554 0.00475 0.75…
Q: The following results are from an independent-measures, two-factor study with n=5 participants in…
A: For two-factor ANOVA data is: Factor B B1 B2 B3 Factor A A1 T=25 M=5 SS=30…
Step by step
Solved in 2 steps with 2 images
- In an experiment on immunization of cattle from tuberculosis, the following results were obtained: Affected Unaffected Inoculated 12. 28Not Inoculated 13 7Examine the effect of vaccine in controlling the incidence of the disease.A new treatment is developed that prevents death but does not produce recovery from disease. Which of the following will occur? [2 O Prevalence will decrease O Incidence will decrease O Incidence will increase O Prevalence will increase The most valid study design to determine causation between a risk factor (exposure) and a certain outcome is: Randomized Clinical trial O Retrospective cohort O Cross sectional O Prospective cohortCurrent Attempt in Progress Dark Chocolate for Good Health A study examines chocolate's effects on blood vessel function in healthy people. In the randomized, double-blind, placebo- controlled study, 11 people received 46 grams (1.6 ounces) of dark chocolate (which is naturally flavonoid-rich) every day for two weeks, while a control group of 10 people received a placebo consisting of dark chocolate with low flavonoid content. Participants had their vascular health measured (by means of flow-mediated dilation) before and after the two-week study. The increase over the two-week period was measured, with larger numbers indicating greater vascular health. For the group getting the good dark chocolate, the mean increase was 1.3 with a standard deviation of 2.32, while the control group had a mean change of-0.96 with a. standard deviation of 1.58. "Engler, M., et. al., "Flavonoid-rich dark chocolate improves endothelial function and increases plasma epicatechin concentrations in healthy…
- Dark Chocolate for Good Health A study¹ examines chocolate's effects on blood vessel function in healthy people. In the randomized, double-blind, placebo-controlled study, 11 people received 46 grams (1.6 ounces) of dark chocolate (which is naturally flavonoid-rich) every day for two weeks, while a control group of 10 people received a placebo consisting of dark chocolate with low flavonoid content. Participants had their vascular health measured (by means of flow-mediated dilation) before and after the two-week study. The increase over the two-week period was measured, with larger numbers indicating greater vascular health. For the group getting the good dark chocolate, the mean increase was 1.3 with a standard deviation of 2.32, while the control group had a mean change of -0.96 with a standard deviation of 1.58. ¹Engler, M., et. al., "Flavonoid-rich dark chocolate improves endothelial function and increases plasma epicatechin concentrations in healthy adults," Journal of the…Give the null and alternative hypothesis of The following are the laboratory results in hemoglobin of 10 male (X1) and 10 female(X2) patients. Test the null hypothesis that there is no significant difference between the hemoglobin of male and female patients. Use the t -test at 0.05 level of significance. As part of the National Health Survey conducted by the Department of Health and Human Services, perceptions on the attitude and practices of vaccine were obtained for females aged 18-30 before and after intervention. Listed below are sample mean results. Is there sufficient evidence to support the claim that there is a difference in the attitude and practice between before and after intervention? Use a 0.05 significance level. A researcher determines the BMI index of geriatrics from Tondo. Using 0.05 level of significance, is the BMI index of geriatrics are within the accepted norm (21)?An experiment was conducted for better understanding of the effectiveness of a particular type of drug for reducing bad cholesterol (LDL) level. The purpose of the experiment was to determine whether different dosages used have significant different outcomes in average LDL reduction. Twenty subjects with LDL at around 250 to 300 mg/dL had participated in the study and were randomly divided into four groups. Each group was given a specific level of dosage of the drug each day for one month, with a control group that only provided with placebo. The reduction in LDL was recorded and showed in the following table. Positive number indicates reduction and negative numbers indicates increasing in DLD. Use statistical software to analyze the data and answer the following question. Control Light Dosage Level Medium Dosage Level Heavy Dosage Level 7 25 73 81 -3 17 60 71 6 22 55 79 5 21 41 60 15 12 36 85 Perform a One-way…
- Can eating a yogurt a day cause people to lose weight? In a study investigating this: (1) What is the explanatory variable? (2) What is the response variable?Benzene is a pollutant that, according to studies, can be associated with health problems. Benzene is found in air, water, and soil and comes from both industrial and natural sources. Benzene levels in indoor air are generally higher than outdoors. The main source of benzene in indoor air appears to be tobacco smoke, thus the combustion of tobacco is a major source of pollution. Benzene levels are measured in a random sample of 36 bars in a city, obtaining an average benzene level of 19.2 mg / m3, with a standard deviation of 2.1 mg / m3. Estimate the mean benzene level in bars in this city using a 95% confidence interval. (do your calculations to 4 decimal places) (need the process can be by hand ,Excel or R.) a)Other solution b)[18.48946, 19.91054] c)[19.0950, 19.3050] d)[18.5140, 19.8859] e)[18.6243, 19.7757] f)[18.4315, 19.7936]A randomized trial assessed the efficacy of colchicine (an anti-inflammatory drug) in reducing recurrence of pericarditis (inflammation of the outer layer of the heart). The study randomized 42 patients to colchicine and 49 patients to standard therapy, and followed them all for 6 months. They reported the following results: Colchicine Standard Rx 0-15% 35-50% 60-75% Developed Recurrent Pericarditis Yes No 10 32 27 In what range is the relative risk reduction? 85-100% 22 32 59 42 49 91 The relative risk reduction can not be calculated from these data
- What principle of design experiment that suggest to control as much aa possible theconditions in the experiment? A. Randomization B. Replication C. Blocking D. RecollectionA comparison between species: Biologists wish to compare the prevalence of a genetic mutation across two species of Neema Toads. In a sample of 6 Neema Toads of Species I, 0.8% had the mutation while in a sample of 14 Neema Toads of Species II, 0.7% showed the mutation. Is there significant evidence to suggest a difference in the prevalence of the mutation across the two species? Conduct a hypothesis test at a significance level of α=0.01α=0.01.a) The hypotheses for this test are: H0: pI - pII = 0Ha: pI - pII ≠ 0 H0: pI - pII = 0Ha: pI - pII < 0 H0: pII = 0.008Ha: pII ≠ 0.008 H0: pI - pII = 0Ha: pI - pII > 0 What is the test statistic for this test?test statistic = (Report answer accurate to 2 decimal places.)What is the p-value for this test?p-value = (Report answer accurate to 4 decimal places.)The decision reached is Fail to reject H0 Reject H0 and accept Ha As such, the final conclusion is that The prevalence of the mutation is the same for both species. There is…A research company wants to determine whether there is a difference in effectiveness of a brand-name ibuprofen and generic ibuprofen. What are the appropriate hypotheses for this testing scenario? Let μ₁ equal the mean of the effectiveness of brand-name ibuprofen and μ2 equal the mean of the effectiveness of generic ibuprofen. O Ho: H1 - H2 = 0 Ha: H1-H₂> 0 O Ho: H1-H2 = 0 Ha: H1 - H₂ 0 O Ho: X1 - X2 = 0 Ha: X1-X₂ #0
