A random sample of 955 supermarket shoppers determined that 429 shoppers preferred generic-branditems. Test at the 15% level the null hypothesis thatat least one-half of all shoppers preferred genericbrand items against the alternative that the populationproportion is less than one-half. Find the power of a15%-level test if, in fact, 45% of the supermarket shoppers preferred generic brands.
A random sample of 955 supermarket shoppers determined that 429 shoppers preferred generic-branditems. Test at the 15% level the null hypothesis thatat least one-half of all shoppers preferred genericbrand items against the alternative that the populationproportion is less than one-half. Find the power of a15%-level test if, in fact, 45% of the supermarket shoppers preferred generic brands.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 5E
Question
A random sample of 955 supermarket shoppers determined that 429 shoppers preferred generic-brand
items. Test at the 15% level the null hypothesis that
at least one-half of all shoppers preferred genericbrand items against the alternative that the population
proportion is less than one-half. Find the power of a
15%-level test if, in fact, 45% of the supermarket shoppers preferred generic brands.
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