A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 10.7, with a standard deviation of 1.5. You believe that average may be different in Hartsville. You collect a sample of 35 households in Hartsville, and find that the average number of screens is 10.55. Follow the outline to test the hypothesis at a significance level of ?=0.05: ?0:?=10.7??:?≠10.7 Identify the critical z-score for a significance level of ?=0.05 Select your answer from one of the following options. a. ??=−1.64 b. ??=1.64 c. ??=±1.96 d. ??=±2.33 e. ??=2.33
A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 10.7, with a standard deviation of 1.5. You believe that average may be different in Hartsville. You collect a sample of 35 households in Hartsville, and find that the average number of screens is 10.55. Follow the outline to test the hypothesis at a significance level of ?=0.05: ?0:?=10.7??:?≠10.7 Identify the critical z-score for a significance level of ?=0.05 Select your answer from one of the following options. a. ??=−1.64 b. ??=1.64 c. ??=±1.96 d. ??=±2.33 e. ??=2.33
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 10.7, with a standard deviation of 1.5. You believe that average may be different in Hartsville. You collect a sample of 35 households in Hartsville, and find that the average number of screens is 10.55.
Follow the outline to test the hypothesis at a significance level of ?=0.05:
?0:?=10.7??:?≠10.7
Identify the critical z-score for a significance level of ?=0.05
Select your answer from one of the following options.
-
a.??=−1.64
-
b.??=1.64
-
c.??=±1.96
-
d.??=±2.33
-
e.??=2.33
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