In a random sample of 8 students, the number of hours they study for the stat class per week are: 12, 8, 4.5, 10, 5, 7.5, 4, and 7. a. Test the null hypothesis if the population's average number of hours studied is at most 5.50 hours, using a=0.05. Calculate the (approximate) p-value. b. Test for if population variance (0²) is equal to 5, use α=0.10. c. What assumptions are necessary for your results' validity in parts a and b?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
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Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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In a random sample of 8 students, the number of hours they study for the stat class per
week are:
12, 8, 4.5, 10, 5, 7.5, 4, and 7.
a. Test the null hypothesis if the population's average number of hours studied is at
most 5.50 hours, using a=0.05. Calculate the (approximate) p-value.
b. Test for if population variance (0²) is equal to 5, use α=0.10.
c. What assumptions are necessary for your results' validity in parts a and b?
Transcribed Image Text:In a random sample of 8 students, the number of hours they study for the stat class per week are: 12, 8, 4.5, 10, 5, 7.5, 4, and 7. a. Test the null hypothesis if the population's average number of hours studied is at most 5.50 hours, using a=0.05. Calculate the (approximate) p-value. b. Test for if population variance (0²) is equal to 5, use α=0.10. c. What assumptions are necessary for your results' validity in parts a and b?
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