A random sample of size 25 are taken from a Normal population that has a mean of 240 and a standard deviation of 30. From the sample data you calculate a sample average of 260. The mean and the standard error of the distribution of sample average is: O a. 30 and 260 O b. 6 and 260 O c. 6 and 240 O d. 30 and 240

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A random sample of size 25 are taken from a Normal population that has a mean of 240 and a standard deviation of 30. From the sample data you calculate a sample average of 260. The mean and the standard error of the distribution of sample average is:

A random sample of size 25 are taken from a Normal population that has a mean of 240 and a standard deviation of 30. From the sample data
you calculate a sample average of 260. The mean and the standard error of the distribution of sample average is:
а.
30 and 260
O b. 6 and 260
с.
6 and 240
O d. 30 and 240
Transcribed Image Text:A random sample of size 25 are taken from a Normal population that has a mean of 240 and a standard deviation of 30. From the sample data you calculate a sample average of 260. The mean and the standard error of the distribution of sample average is: а. 30 and 260 O b. 6 and 260 с. 6 and 240 O d. 30 and 240
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