A rods manufacturer makes rods with a length that is supposed to be 10 inches. A quality control technician sampled 14 rods and found that the sample mean length was 10.07 inches and the sample standard deviation was 0.11 inches. The technician claims that the mean rod length is more than 10 inches. What type of hypothesis test should be performed? Select: Right-tailed t-test Left-tailed z-test Left-tailed t-test Two-tailed z-test What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist at the α=0.01 significance level to support the technician's claim? Select: ________Yes OR ________NO
A rods manufacturer makes rods with a length that is supposed to be 10 inches. A quality control technician sampled 14 rods and found that the sample mean length was 10.07 inches and the sample standard deviation was 0.11 inches. The technician claims that the mean rod length is more than 10 inches. What type of hypothesis test should be performed? Select: Right-tailed t-test Left-tailed z-test Left-tailed t-test Two-tailed z-test What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist at the α=0.01 significance level to support the technician's claim? Select: ________Yes OR ________NO
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 rods manufacturer makes rods with a length that is supposed to be 10 inches. A quality control technician sampled 14 rods and found that the sample mean length was 10.07 inches and the sample standard deviation was 0.11 inches. The technician claims that the mean rod length is more than 10 inches.
What type of hypothesis test should be performed? Select:
Right-tailed t-test
Left-tailed z-test
Left-tailed t-test
Two-tailed z-test
What is the test statistic? What is the number of degrees of freedom?
Does sufficient evidence exist at the α=0.01 significance level to support the technician's claim? Select: ________Yes OR ________NO
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