A random sample of 16 statistics examinations from a large population was taken. The average score in the sample was 78.6 with a sample variance of 64. We are interested in determining whether the average grade of the population is significantly more than 75. Assume the distribution of the population of grades is normal. The value of the test statistic is O a. 3.6 O b. 0.45 O C. 1.80

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A random sample of 16 statistics examinations from a large population was taken. The average score in the sample was 78.6 with a sample variance of 64.
We are interested in determining whether the average grade of the population is significantly more than 75. Assume the distribution of the population of
grades is normal. The value of the test statistic is
O a.
3.6
O b. 0.45
Oc.
1.80
Transcribed Image Text:A random sample of 16 statistics examinations from a large population was taken. The average score in the sample was 78.6 with a sample variance of 64. We are interested in determining whether the average grade of the population is significantly more than 75. Assume the distribution of the population of grades is normal. The value of the test statistic is O a. 3.6 O b. 0.45 Oc. 1.80
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