A market researcher wants to perform a test with the intent of establishing that his company’s pump bottle of soap has a mean lifetime greater than 40 days. The sample size is 70 and the researcher knows that the standard deviation σ=5.6. Assume that the lifetimes of pump bottles of soap follow a normal distribution. a. If you set the rejection region to be R: ?̅ ≥41.31, what is the level of significance of your test? b. Find the numerical value of c such that the test R: ?̅ ≥? has a 5% level of significance.
A market researcher wants to perform a test with the intent of establishing that his company’s pump bottle of soap has a mean lifetime greater than 40 days. The sample size is 70 and the researcher knows that the standard deviation σ=5.6. Assume that the lifetimes of pump bottles of soap follow a normal distribution. a. If you set the rejection region to be R: ?̅ ≥41.31, what is the level of significance of your test? b. Find the numerical value of c such that the test R: ?̅ ≥? has a 5% level of significance.
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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A market researcher wants to perform a test with the intent of establishing that his company’s
pump bottle of soap has amean lifetime greater than 40 days. The sample size is 70 and the
researcher knows that the standard deviation σ=5.6. Assume that the lifetimes of pump
bottles of soap follow anormal distribution .
a. If you set the rejection region to be R: ?̅ ≥41.31, what is the level of significance of
your test?
pump bottle of soap has a
researcher knows that the standard deviation σ=5.6. Assume that the lifetimes of pump
bottles of soap follow a
a. If you set the rejection region to be R: ?̅ ≥41.31, what is the level of significance of
your test?
b. Find the numerical value of c such that the test R: ?̅ ≥? has a 5% level of significance.
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