A study was conducted to determine the effectiveness of helichrysum oil for allergies. 31 of the 48 subjects who were given helichrysum oil still developed symptoms of allergies after taking the oil. In a group who were given plecebos, 87 of the 108 subjects still developed symptoms of allergies. Use a 90% confidence level to test the claim that helichrysum oil has an effect on allergy symptoms. Is this a right, left or two tailed test? What is the P-value? write a conclusion

Q: caffeinated coffee intake and clinical depression in women. Using the provided output, what are the…

A: From the given data  number of rows = 2 number of columns = 4

Q: A well-known psychologist has established what she calls her Generalized Anxiety (GA) scale. The GA…

A: Number of adults =11Regression equation is

Q: 7. For the preceding problem you should find that there are significant differences among the three…

A:

Q: State the null and alternative hypotheses for determining whether there is a significant linear…

A: From the given information we show the null and alternative hypothesis

Q: The Human Resources Department is studying absenteeism with employees. They have noticed an…

A: The data for number of absence before and after the fitness program is given…

Q: Dr. Y collected data on local people’s viewpoints about the building of the 2020 Olympic venue in…

A: Solution : Given : Local people’s viewpoints about the building of the 2020 Olympic venue in Tokyo,…

Q: Find the relative risk for the headache data.

A: here use given information , For treatment group n = 2142 x= 22 (reported headache)   for control…

Q: A study has shown that there is a correlation between body weight and blood pressure. Higher body…

A: The correlation shows a relationship between two variables.

Q: Urban legend says that knuckle cracking is bad for you and will eventually lead to osteoarthritis of…

A:

Q: Benzene is a pollutant that, according to studies, can be associated with health problems. Benzene…

A: Formula :

Q: OxyContin The drug OxyContin (oxycodone) is used to treat pain, but it is dangerous because it is…

A: Solution:Given that,Level of significance = 0.05Sample size(x) = 52Total (n) =227

Q: Inadequate exposure to outdoor lighting conditions may increase the risk of myopia in children. A…

A:

Q: A group of researchers were interested in ways to lower blood pressure. The study consisted of 90…

A: Given Information: The researchers were interested to lower blood pressure in individuals. A total…

Q: randomized, double-blind, placebo-controlled study evaluated the effect of the herbal remedy…

A: For the echinacea group: Sample size (n1): 337 Mean severity score (x̄1): 6.0 Standard deviation…

Q: A recent study randomly selected women from various countries around the world and collected…

A:

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 37 of the…

A:

Q: A researcher conducts an independent-measures study examining how the brain chemical serotonin is…

A: A. Null and alternate hypotheses: The investigator is specifically interested to test whether the…

Q: Find the standard error for comparing the means.  Construct a 95% confidence interval for the…

A: The sample mean of the body dissatisfaction assessment score was 13.4 (s=7.9) for 15 lean sports…

Q: Two groups of women are screened for human papillomavirus (HPV) infections of the uterine cervix.…

A: The true prevalence of HPV infection in the first group is 0.10.The true prevalence of HPV infection…

Q: Skittles claims that 30% of their candies are purple, 30% are green, 20% are orange, 10% are blue…

A: Solution: The given table of data is

Q: Comparing p-value and α value, which is the correct decision to make for this hypothesis test?  A.…

A: We want find test statistics , P-value,  decision and conc

Q: A recent study investigated whether the number of positive health behaviors (e.g., exercising,…

A: The formulas for MS regression and MS residuals are given by :…

Q: Dr. S. compared her experimental group to a control group using a t test and concluded that her t…

A: Here Dr. S. compared her experimental group to a control group using a t-test. Hence the null and…

Q: 19% of deaths among male adults can be attributed to heart diseases. Is this percentage different…

A: Solution: It is given that 19% of deaths among male students can be attributed to heart diseases.

Q: A group of researchers wants to know whether men (population 1) are more likely than women…

A:

Q: Read through this scenario and look at the data that was collected.  State the null and all possible…

A: Provided ANOVA result with replication

Q: The drug OxyContin (oxycodone) is used to treat pain, but it is dangerous because it is addictive…

A: Given Information :  The drug OxyContin (oxycodone) is used to treat pain, but it is dangerous…

Q: A counseling psychologist hypothesizes that more perceived femininity predicts less perceptions of a…

A: a.   State the null and alternative Hypotheses:   Null Hypothesis:   H0: β=0.   That is, more…

Q: An epidemiologist found five cases of “big toe cancer” in the Yukon Territory. Because there were…

A: Note: Since we are authorized to answer only up to 3 subparts, we are answering first three…

Q: A community college wants to analyze the age and GPA of its students. Here is the data: Age 18 40…

A: A t-test is a type of inferential statistic used to determine if there is a significant difference…

Q: Mt. Dew is thinking about coming out with a new flavor. They are using a sample of 40 people who are…

A: From the given information, Sample size n =40 Sample mean, x̅=14.4 Sample standard deviation, s=3.50…

Q: What is the distinguishing feature of a case-control study such as this? An epidemiologist performed…

A: We are interested in the how this study is performed.

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.