Two random samples with sizes 100 and n are chosen from the populations with the means 85.6 and 82.1. They have standard deviations 12.4 and 8.9, respectively. Which of these values of n would result in the smallest SE? a. 100
b. 120
c. 90
d. 50
e. 70

And for this case if we have the same sample size we got the minimum value when we have the higher value fo n for each one and for this case would be the

b. 120

Step-by-step explanation:

For this case we have the following info given:

We assume that the variable of interest is the linear combination of the two means and for this case the standard error would be given by:

And for this case if we have the same sample size we got the minimum value when we have the higher value fo n for each one and for this case would be the

b. 120

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

his chances of getting a coin of higher value is 4/19

step-by-step explanation: