State the null and alternative hypotheses

Assignment Help Basic Statistics
Reference no: EM131087331

In the Physician's Health Study, 22,701 male physicians participated in a study to determine whether taking a daily low-dose aspirin reduced the risk of heart attacks. The men were randomly assigned to two groups and the study was double-blind. After five years, of 104 the 11,037 men taking a daily low dose aspirin had had a heart attack while 189 of the 11,034 men taking a placebo had had a heart attack.1Does taking a daily low-dose aspirin reduce the risk of heart attacks?

State the null and alternative hypotheses. Use subscripts 1 for the treatment group (taking the daily low-dose aspirin) and 2 for the control group (taking a placebo).

test statistic = ?

P- Value = ?

What is the conclusion?

Does taking a daily low-dose aspirin reduce the risk of heart attacks?

Reference no: EM131087331

Questions Cloud

Represent the proportion supporting capital punishment : Find a 99% confidence interval for the difference in the two proportions,P1 - P2 , where P1 and P2 represent the proportion supporting capital punishment in 2006 and 1974, respectively.
Proportion of women who support the proposed law : Use this information to find a 95% confidence interval for the difference in the two proportions, Pm-Pw, where Pm is the proportion of men who support the proposed law and Pw is the proportion of women who support the proposed law.
Determining the confidence interval : A 90% confidence interval for p1 - p2 given counts of 148 yes out of 170 sampled for Group 1 and 12 yes out 110 sampled for Group 2. Give the best estimate for p1 - p2, the margin of error, and the confidence interval.
Represent legitimate probability models : Consider a sample space of three outcomes A,B,and C. Which of the following represent legitimate probability models?
State the null and alternative hypotheses : State the null and alternative hypotheses. Use subscripts 1 for the treatment group (taking the daily low-dose aspirin) and 2 for the control group (taking a placebo).
Probability of no off-the-job accidents : The Safety Council estimates that off-the-job accidents cost businesses almost $500 billion annually in lost productivity. Based on their estimates, companies with hundred employees are expected to have six off-the-job accidents per year. a) What ..
Write a program that implements message flow : Write a program that implements message flow from the top layer to the bottom layer of the 7-layer protocol model.
Compute the expected number of withdrawals : a) Compute the expected number of withdrawals b) Compute the probability that exactly four will withdraw c) Compute the probability that more than three will withdraw d) Compute the probability that two or fewer will withdraw
Confidence interval estimate on the mean : The average cost per night of a hotel room in San Francisco is $550 with a standard deviation is $150 based on a sample of 50 hotel room rates.

Reviews

Write a Review

Basic Statistics Questions & Answers

  The number of books checked out at a public library by a

the number of books checked out at a public library by a sample of eight primary school children were recorded6 4 5 7 5

  In order to compare failure rates for two brands of tires a

in order to compare failure rates for two brands of tires a sample of 600 tires of brand a was taken of which 36

  Suppose you fit the first order multiple regression model y

suppose you fit the first order multiple regression model y b0 b1x1 b2x2 eto n 25 data points and obtain the

  Confidence interval-means of the two populations

Salary information for a random sample of male and female employees of a large company is shown below.

  What percentage of workers who earn more

If the standard deviation is $11,200, what can you say about the percentage of these workers who earn how likely is it that someone earns more than $100,000?

  Probabilities of normal distribution

A survey for Hotels asked respondents "When traveling internationally, do you generally venture out on your own to experience culture, or stick with your tour group and itineraries?" The survey found that 23% of the respondents stick with their t..

  Key resource in random sampling

The Electoral Register is A key resource in random sampling and before it is used, it is important to know how it works. This website will answer any questions you have on the Roll.

  Problem related to deer in a region carry a certain tick

Biologist estimates that 50% of the deer in a region carry a certain type of tick. For a sample of 300 deer selected at random, what is the chance that 155 or fewer deer have this tick?

  The following information is collected from students upon

the following information is collected from students upon exiting the campus bookstore during the first week of

  A mechanical assembly consists of a rod with a bearing on

a mechanical assembly consists of a rod with a bearing on each end. the 3 parts are manufactured independently. the

  Phrasing null and test hypothesis for two sample test

Determine if there is evidence to conclude that the mean number of vacations taken by married individuals is less then the number taken by single/divorced individuals using data in Excel file vacation survey.

  You are placing a bet that the outcome is an even number in

a modified roulette wheel has 40 slots. one slot is 0 another is 00 and the others are numbered 1 through 38

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd