12. A study was conducted to see if daily exercise is effective at lowering blood pressure. To test this, amanager at a large retail store selccted a random sample of 30 employces. Fifteen of the employees wererandomly sclected to exercise each day and the other fifteen did not excrcise. The blood pressure of theemployees was measured before the study and again after 3 months. The results showed that people thatexercise daily had, on average, significantly lower blood pressure than the pcople in the non-exercisegroup. Based on the design of the study, which of the following is trueThe results can be generalized to the entire store and we can condude that excrcisingcauses lower blood pressurc.b. The results cannot be generalized to the entire store, but we can conclude thatexercising causes lower blood pressure.The results can be generalized to the entire store, but we cannot conclude thatexercising causcs lower blood pressure.The results cannot be generalized to the entire store and we cannot conclude thatexercising causes lower blood pressure.a.c.d.

option a which is "the result can be generalized to the entire store and we can conclude that…

Answered: 2. A study was conducted to see if…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A study used 1259 patients who had suffered a stroke. The study randomly assigned each subject to an aspirin treatment or a placebo treatment. During a 3-year follow-up period, in Sample 1, 634 people received placebo treatments and 25 people died from heart attack. In sample 2, 625 people received aspirin treatment and 18 died from heart attack. Let pl denote the population proportion of death from heart attack for those with no treatment and p2 denote the population proportion of death from heart attack for those with aspirin treatment. (c) Which of SEO and SE1 is used for calculating a confidence interval for comparing two population proportions? Which is used for calculating the test statistic in a hypothesis test? (d) Construct the 95% confidence interval for pi – p2. Interpret.
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When does Two Related Samples occur?
Only one can be chosen

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