QUESTION 22 A group of 64 randomly selected students, from all MTH213 sections at Zayed University, has a sample mean score of 74 with a sample standard deviation of 4 on a Midterm Exam. (a) Construct a 99% confidence interval for the mean score, μ, of all students taking the test? Round your answer to three decimal places. (b) Based on the 99% confidence interval in (a) is it reasonable that the population mean score is 77? Justify your answer.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter10: Statistics
Section10.3: Measures Of Spread
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QUESTION 22
A group of 64 randomly selected students, from all MTH213 sections at Zayed University, has a sample mean score of 74 with a
sample standard deviation of 4 on a Midterm Exam.
(a) Construct a 99% confidence interval for the mean score, µ, of all students taking the test? Round your answer to three
decimal places.
(b) Based on the 99% confidence interval in (a) is it reasonable that the population mean score is 77? Justify your answer.
Transcribed Image Text:QUESTION 22 A group of 64 randomly selected students, from all MTH213 sections at Zayed University, has a sample mean score of 74 with a sample standard deviation of 4 on a Midterm Exam. (a) Construct a 99% confidence interval for the mean score, µ, of all students taking the test? Round your answer to three decimal places. (b) Based on the 99% confidence interval in (a) is it reasonable that the population mean score is 77? Justify your answer.
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