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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 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,

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 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,

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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the confidence level is not 99 I need the confidence level and the confidence interval thankyou

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? P-value method and 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 the assumption that the two population proportions are equal, whereas the other method uses a standard deviation based on estimated values of the population proportions. c. If a 0.01 significance level is to be used to test the claim that p, <p2, what confidence level should be used? % (Type an integer or a decimal.)
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? P-value method and 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 the assumption that the two population proportions are equal, whereas the other method uses a standard deviation based on estimated values of the population proportions. c. If a 0.01 significance level is to be used to test the claim that p, <p2, what confidence level should be used? % (Type an integer or a decimal.)
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