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p and z values please

p and z values please

MATLAB: An Introduction with Applications
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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p and z values please

A group conducted a randomized experiment to see if hormone therapy was helpful for post-menopausal women. The women were randomly assigned to receive a hormone or a placebo. After 5 years, 119 of the 8545 on the hormone therapy developed cancer and 89 of the 8107 in the placebo group developed cancer. Is this a significant difference? Complete parts a through c below. a. State the assumptions and the hypotheses. What assumptions about the two samples are necessary for the significance test? A. The response variable is categorical, and the samples are independent, random, and large enough. OB. The samples are independent, random, and a point estimate of the population proportion is known. C. The samples are independent, random, and selected from a population that is approximately normal. OD. The samples are independent, random, and selected from a populations that have the same standard deviation. Let p represent the probability that someone gets cancer. Let p, represent the probability that a person who receives hormone therapy gets cancer, and let p2 represent the probability that a person who receives a placebo gets cancer. Write the claim as a hypothesis test. Choose the correct null and alternative hypotheses below. OA. Ho: P₁ P₂ versus H₂: P₁ P2 OB. Ho: P₁ P2 versus H₂: P₁ P2 C. Ho: P₁ = P₂ versus H₂: P₁ P2 O D. Ho: P₁ = 0 versus H₂: P₁ #0 b. Find the test statistic and the P-value and interpret. Find the test statistic. Z= (Round to two decimal places as needed.)
Transcribed Image Text:A group conducted a randomized experiment to see if hormone therapy was helpful for post-menopausal women. The women were randomly assigned to receive a hormone or a placebo. After 5 years, 119 of the 8545 on the hormone therapy developed cancer and 89 of the 8107 in the placebo group developed cancer. Is this a significant difference? Complete parts a through c below. a. State the assumptions and the hypotheses. What assumptions about the two samples are necessary for the significance test? A. The response variable is categorical, and the samples are independent, random, and large enough. OB. The samples are independent, random, and a point estimate of the population proportion is known. C. The samples are independent, random, and selected from a population that is approximately normal. OD. The samples are independent, random, and selected from a populations that have the same standard deviation. Let p represent the probability that someone gets cancer. Let p, represent the probability that a person who receives hormone therapy gets cancer, and let p2 represent the probability that a person who receives a placebo gets cancer. Write the claim as a hypothesis test. Choose the correct null and alternative hypotheses below. OA. Ho: P₁ P₂ versus H₂: P₁ P2 OB. Ho: P₁ P2 versus H₂: P₁ P2 C. Ho: P₁ = P₂ versus H₂: P₁ P2 O D. Ho: P₁ = 0 versus H₂: P₁ #0 b. Find the test statistic and the P-value and interpret. Find the test statistic. Z= (Round to two decimal places as needed.)
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