a-university-reports-that-the-average-score-on-its-entrance-exam-is-7272-with-a-

Question

A university reports that the average score on its entrance exam is $72$ with a standard deviation of $8$ . If random samples of $64$ students are selected, what are the mean and standard deviation of the sampling distribution of the sample mean?

Accepted Answer

$mu sub X ˉ equals 72$

$sigma sub X ˉ equals 1$

Answer

$mu sub X ˉ equals 72$

$sigma sub X ˉ equals 1$

Answer

$mu sub X ˉ equals 72$

$sigma sub X ˉ equals 1$

Answer

$mu sub X ˉ equals 72$

$sigma sub X ˉ equals 1$

A university reports that the average score on its entrance exam is 7272 with a standard deviation of 88. If random samples of 6464 students are selected, what are the mean and standard deviation of the sampling distribution of the sample mean?

A university reports that the average score on its entrance exam is $72$ with a standard deviation of $8$ . If random samples of $64$ students are selected, what are the mean and standard deviation of the sampling distribution of the sample mean?