Because the sample mean (from data for current hours of sleep per night I collected) needs to be compared to a distribution of all possible sample means (i. e., the sampling distribution), calculate the standard error (standard deviation of the sampling distribution) from the estimated population variance that you just calculated in the previous question.

differnt varibles efect the range

step-by-step explanation:

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

think the answer is 30 degrees. if not than it is 20 degrees. not 100% sure. let me know if it was right.

gill russ