Asample of 20 observations has a standard deviation of 4. the sum of the squared deviations from the sample mean is:

304.

Step-by-step explanation:

The formula to calculate the sample standard deviation is given by :-

, where x = sample element.

= Sample mean

s=sample standard deviation.

n= Number of observations.

= sum of the squared deviations from the sample mean

As per given , we have

s=4

n= 20

Substitute theses values in the above formula , we get

Square root on both sides , we get

Hence, the sum of the squared deviations from the sample mean is 304.

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75