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QUESTION 27 The average score on Midterm Exam over the past years was 80. With a new teaching curriculum introduced, it is believed that this score will change. A random sample of 20 students is selected and the mean score was found to be 75 with a standard deviation of 15. Assume the scores are normally distributed, what is the corresponding p- value of the test? 1

QUESTION 27 The average score on Midterm Exam over the past years was 80. With a new teaching curriculum introduced, it is believed that this score will change. A random sample of 20 students is selected and the mean score was found to be 75 with a standard deviation of 15. Assume the scores are normally distributed, what is the corresponding p- value of the test? 1

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
Section10.3: Measures Of Spread
Problem 1GP
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QUESTION 27 The average score on Midterm Exam over the past years was 80. With a new teaching curriculum introduced, it is believed that this score will change. A random sample of 20 students is selected and the mean score was found to be 75 with a standard deviation of 15. Assume the scores are normally distributed, what is the corresponding p- value of the test? 1
Transcribed Image Text:QUESTION 27 The average score on Midterm Exam over the past years was 80. With a new teaching curriculum introduced, it is believed that this score will change. A random sample of 20 students is selected and the mean score was found to be 75 with a standard deviation of 15. Assume the scores are normally distributed, what is the corresponding p- value of the test? 1
QUESTION 16 An environmental researcher wants to know whether the mean amount of sulfur dioxide in the air in UAE cities is more than 1.19 parts per billion (ppb). She tested the hypotheses Ho: ps1.19 versus Ha: >1.19 using a significance level a = 0.01. The p-value of the test is 0.013. If the true value of u is 1.20, the conclusion results in Both Type I and Type II errors. Type I error. Type II error. O Correct decision.
Transcribed Image Text:QUESTION 16 An environmental researcher wants to know whether the mean amount of sulfur dioxide in the air in UAE cities is more than 1.19 parts per billion (ppb). She tested the hypotheses Ho: ps1.19 versus Ha: >1.19 using a significance level a = 0.01. The p-value of the test is 0.013. If the true value of u is 1.20, the conclusion results in Both Type I and Type II errors. Type I error. Type II error. O Correct decision.
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