children were given a placebo, and 93 of those children developed the disease. Consider the vaccine treatment group sample. a. Assume that a 0.01 significance level will be used to test the claim that p,
children were given a placebo, and 93 of those children developed the disease. Consider the vaccine treatment group sample. a. Assume that a 0.01 significance level will be used to test the claim that p,
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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The last box options are "the assumption that the two population proportions are equal" OR "estimated values of the population proportions".

Transcribed Image Text:In a large clinical trial, 399,342 children were randomly assigned to two groups. The treatment group consisted of 201,406 children given a vaccine for a certain disease, and 27 of those children developed the disease. The other 197,936
children were given a placebo, and 93 of those children developed the disease. Consider the vaccine treatment group to be the first sample. Complete parts (a) through (d) below.
a. Assume that a 0.01 significance level will be used to test the claim that p, <p2. Which is better: A hypothesis test or a confidence interval?
A hypothesis test
is better.
b. In general, when dealing with inferences for two population proportions, which two of the following are equivalent: confidence interval method; P-value method; critical value method?
are equivalent, in that they will always lead to the same conclusion. Both of these methods use a standard deviation based on
hereas the other method uses a standard deviation based on
P-value method and critical value method
Confidence interval method and P-value method
Confidence interval method and critical value method

Transcribed Image Text:In a large clinical trial, 399,342 children were randomly assigned to two groups. The treatment group consisted of 201,406 children given a vaccine for a certain disease, and 27 of those children developed the disease. The other 197,936
children were given a placebo, and 93 of those children developed the disease. Consider the vaccine treatment group to be the first sample. Complete parts (a) through (d) below.
a. Assume that a 0.01 significance level will be used to test the claim that p, <p2. Which is better: A hypothesis test or a confidence interval?
A hypothesis test is better.
b. In general, when dealing with inferences for two population proportions, which two of the following are equivalent: confidence interval method; P-value method; critical value method?
are equivalent, in that they will always lead to the same conclusion. Both of these methods use a standard deviation based on
whereas the other method uses a standard deviation based on
the assomption that the two population proportions are equal,
estimated values of the population proportions,
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