Choose the correct inference procedure that John should use to test if the mean weekly study time from his sample differs from 20.5 hours:
Choose the correct inference procedure that John should use to test if the mean weekly study time from his sample differs from 20.5 hours:
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 6E
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Question
John wants to open a learning center for high school students in his community. John wants to compare the average time area high school students spend studying per week with the regional average, 20.5 hours.
John surveys 25 randomly selected local high school students, asking how much time they spend studying in a typical week. Graphs of his sample data show no strong skewness or outliers.
Choose the correct inference procedure that John should use to test if the
one-sample, two-sided z-test for a proportion
one-sample, right-tailed t-test for a mean
one-sample, left-tailed t-test for a mean
one-sample, two-sided t-test for a mean
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