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
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 7PPS
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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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