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A quality control specialist at a plate glass factory must estimate the mean clarity rating of a new batch of glass sheets being produced using a sample of 18 sheets of glass. The actual distribution of this batch is unknown, but preliminary investigations show that a normal approximation is reasonable. The specialist decides to use at distribution rather than a standard normal distribution because а. The sample size is large b. The data comes from only one batch. С. The population size is large. O d. The t-distribution results in a narrower confidence interval. O e. The variability of the batch is unknown.

A quality control specialist at a plate glass factory must estimate the mean clarity rating of a new batch of glass sheets being produced using a sample of 18 sheets of glass. The actual distribution of this batch is unknown, but preliminary investigations show that a normal approximation is reasonable. The specialist decides to use at distribution rather than a standard normal distribution because а. The sample size is large b. The data comes from only one batch. С. The population size is large. O d. The t-distribution results in a narrower confidence interval. O e. The variability of the batch is unknown.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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A quality control specialist at a plate glass factory must estimate the mean clarity rating of a new batch of glass sheets being produced using a sample of 18 sheets of glass. The actual distribution of this batch is unknown, but preliminary investigations show that a normal approximation is reasonable. The specialist decides to use at distribution rather than a standard normal distribution because O a. The sample size is large O b. The data comes from only one batch. Ос. The population size is large. O d. The t-distribution results in a narrower confidence interval. O e. The variability of the batch is unknown.
Transcribed Image Text:A quality control specialist at a plate glass factory must estimate the mean clarity rating of a new batch of glass sheets being produced using a sample of 18 sheets of glass. The actual distribution of this batch is unknown, but preliminary investigations show that a normal approximation is reasonable. The specialist decides to use at distribution rather than a standard normal distribution because O a. The sample size is large O b. The data comes from only one batch. Ос. The population size is large. O d. The t-distribution results in a narrower confidence interval. O e. The variability of the batch is unknown.
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