Series forecasting for Business || Spring21 Time left 0:08:10 A random sample of 16 statistics examinations from a large population was taken. The average score in the sample was 78.6 and population variance was 64. We are interested in determining whether the average grade of the population is at least 75. Assume the distribution of the population of grades is normal. Then the critical value of the test at 5% level is O A. 1.753 OB. 1.96 OC. 1.645 d.p. None OE 1.645 NEXT PAGE IS PAGE

A First Course in Probability (10th Edition)
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Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Series forecasting for Business || Spring21
Time left 0:08:10
Arandom sample of 16 statistics examinations from a large population was taken. The average score in the sample
was 78.6 and population variance was 64. We are interested in determining whether the average grade of the
population is at least 75. Assume the distribution of the population of grades is normal. Then the critical value of the
test at 5% level is
O A 1.753
OB. 1.96
OC 1.645
clo. None
OE 1645
NEXT PAGE
TOUS PAGE
Transcribed Image Text:SYSTE Series forecasting for Business || Spring21 Time left 0:08:10 Arandom sample of 16 statistics examinations from a large population was taken. The average score in the sample was 78.6 and population variance was 64. We are interested in determining whether the average grade of the population is at least 75. Assume the distribution of the population of grades is normal. Then the critical value of the test at 5% level is O A 1.753 OB. 1.96 OC 1.645 clo. None OE 1645 NEXT PAGE TOUS PAGE
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