A well-known study of 22,000 male physicians was conducted to determine if taking aspirin daily reduces the chances of a heart attack. Half of the physicians were given a regular dose of aspirin while the other half was given placebos. Six years later, among those who took aspirin, 104 suffered heart attacks while among those who took placebos, 189 suffered heart attacks. Does it appear that the aspirin can reduce the number of heart attacks among the sample group that took aspirin? Use α = 0.05.

Q: How many females and males of the sample have satisfying non- academic performance inspite of having…

A: Given information: Total population of first-year optometry students from DDC = 65 20% of the sample…

Q: A new drug to treat psoriasis has been developed and is in clinical testing. Assume that those…

A: The test hypotheses are given below: Null hypothesis: H0:p1=0.02,p2=0.77,p3=0.16,p4=0.05 Alternative…

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: A case-control study was conducted to evaluate the relationship between aspirin use and the risk of…

A: An odds ratio quantifies the strength of the association between two events A and B. It is defined…

Q: An antidepressant has historically been known to relieve depression for 65% of patients who use the…

A: A random sample of 245 patients who use the new version is selected by researcher, 139 of them find…

Q: A research study was conducted about gender differences in sexting, the sending of sexually explicit…

A: Given Girls x1=156n1=2169   Boys x2=183n2=2231   α=0.05

Q: Dementia is a common mental health problem affecting those over65. It is believed that of those that…

A: a) The null hypothesis is a simple statement about the value of the population parameter which is…

Q: A study of the relationship between blood pressure and cholesterol level showed the following…

A: Let A = have high cholesterol       B = Have high blood pressure Give that, we can write as…

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

A:

Q: article in the Archives of Internal Medicine reported that in a sample of 244 men, 73 had elevated…

A: Given that  Sample size n1=244 , n2=232 Favorable cases x1=73, x2=44

Q: Studies have suggested that alcohol abuse and disorders are found to be more prevalent during early…

A: a)   Denote p1, p2 as the true population proportions of young adults who have consumed alcohol and…

Q: An American medical team wishes to test whether passive smoking affects the chance of children…

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Q: An auto shop wants to examine the proportion of customers that have to retur after an appointment.…

A: Given that  Sample sizes n1=402 , n2=319 Sample proportion p1^=0.224 , p2^=0.251

Q: Do sports drinks help prevent cramps in endurance sports? At the end of a marathon, officials will…

A: Observational study: In observational study, the individuals of the study are observed by the…

Q: Researchers Regine Dilla and associates wanted to determine whether consumption of cola is…

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Q: kindly assist,   An epidemiologist who is working in Capricorn Department of Health investigated…

A: We have given that  Sample size n =10000 Favorable cases x =275 Sample proportion p^=x/n  =275/10000…

Q: Last year, the marist poll conducted a national survey of adults and found that 35% responded "A lot…

A: Null and Alternate Hypothesis: H0: Response to this question by adults nationwide has not changed…

Q: Fifteen years ago, a complete survey of all undergraduate students at a large university indicated…

A: The data set is: 6.2, 7.1, 7.3, 6.8, 6.6, 7, 7.5, 6.8, 6.4, 6.5, 7.1, 7.3 and 6.8 The hypotheses…

Q: Noonan syndrome is a genetic condition that can affect the heart, growth, blood clotting, and mental…

A: Given, No of males =29 No of females =44 x1 = No of males fall below the third percentile of adult…

Q: Find the percent of women not experiencing any new UTIs in each of the three treatment groups

A: The summarized results for the given study are as followsTreatmentRecurring UTINo New UTI…

Q: An antiaepressant has historically been known to relieve depression for 80% of patients who use the…

A: Note: According to Bartleby guidelines, expert solve only one question and maximum 3 subpart of the…

Q: A research study was conducted about gender differences in "sexting." The researcher believed that…

A: Solution:- from given information claim: The proportion of girls sending sexts is less than the…

Q: Suppose you are conducting a study to compare the effectiveness of two different medications in…

A: Given that 30% of patients using medication A, experience symptom relief. 45% of patients using…

Q: Researchers studying the link between prenatal vitamin use and autism surveyed the mothers of a…

A: Let x1: Number of mothers with autism taking prenatal vitaminsx2: Number of mothers with autism…

Q: A study is undertaken to determine if prenatal exposure to marijuana is associated with low birth…

A: The objective of this question is to calculate the odds ratio, which is a measure of association…

Q: Lung cancer is the leading cause of cancer‑related deaths in the United States. Researchers examined…

A: Given :  3% of heavy smokers develop lung cancer  CT scan positively identifies lung cancer = 89%…

Q: the proportion, p, of people who find relief is lower than 63%.

A: Given : n=215 , X=125 , p0=0.65 , α=0.05 We want to test the claim that the proportion , p of people…

Q: A new drug to treat psoriasis has been developed and is in clinical testing. Assume that those…

A: State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.…

Q: People who get angry easily tend to have more heart disease. That is the conclusion of a study that…

A: Given the data on people who get angry easily and tend to have heart disease.Want to calculate…

Q: As men age, their testosterone levels gradually decrease. This may cause a reduction in energy, an…

A: Here, we are given a study of 237 men aged 60 to 80 years with low or low normal levels of…

Q: An antidepressant has historically been known to relieve depression for 80% of patients who use the…

A:

Q: Using the latest in medical technology, an orthopedic doctor has developed a new surgical procedure…

A:

Q: A health officer thinks that there is an association between diabetes (DM) and hypertension (HPT).…

A: Chi-square test of independence

Q: (a-1) Specify the decision rule. (A negative value should be indicated by a minus sign. Round your…

A:

Q: In 1990, 58% of Americans 18 years old and older reported they have a great deal of concern…

A: Introduction: Here, the hypothesized proportion is given as 58% or p = 0.58. The researchers collect…

Q: A auto shop wants to examine the proportion of customers that have to return after an appointment.…

A:

Q: An antidepressant has historically been known to relieve depression for 80% of patients who use the…

A: a) Suppose p is the true population proportion of people with depression, who use the new version of…

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.