CHALLENGE 8.2.4: Hypothesis testing for two population proportions (two-tailed z-test).ACTIVITY402562 2500368.cx3zqy7Jump to level 1Two substance abuse clinics would like to compare retention rates for the programs offered by each to seewhether the proportion of clients who stayed in after 90 days is different for the two clinics. A simple randomsample of clients from each clinic is taken, recording whether the client was still in the program after 90 days.Clinic B has more clients and was able to collect a larger sample. The results of the sample are shown below.What are the population parameters?PickDClinic AClinic B64 What is the level of significance? Ex: 0.12SuccessesObservations33 Successes50 Observationsp-hat_10.66 p-hat_20.752941What is the null hypothesis Ho? PickConfidence LevelWhat is the alternative hypothesis H? Pick1.160p-value0.246Should Ho be rejected or does Ho fail to be rejected? PickWhat conclusion can be drawn from the data?Pick✓evidence exists to support the claim that retention rates for the two clinics are different.=02(CC

Answered: Two substance abuse clinics would like…

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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Health insurer benefits vary by the size of the company. The sample data below show the number of companies providing health insurance for small, medium, and large companies. For the purpose of this study, small companies are companies that have fewer than 100 employees. Medium-sized companies have 100 to 999 employees, and largevcompanies have 1000 or more employees. The questionnaire sent to 225 employees asked whether or not the employee had health insurance and then asked the employee to indicate the size of the company. Health Insurance Size of company Yes No Total Small. 35 15 50 Medium 67 8 75 Large 87 13 100 A. Conduct a test of independence to determine whether health insurance coverage is independent of the size of the company. What is the p-value? Compute the value of the x2 test statistic (to 2 decimal)
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