Use the standard deviation values of the two samples to find the standard deviation of the sample mean differences.
Sample Standard Deviation
Red box 3.868
Blue box 2.933
Then complete each statement.
The sample size of the session regarding the number of people would purchase the red box,
Ni, is
a)63
b)48
c)45
d)60
The sample size of the session regarding the number of people would purchase the blue
box, N2, is
a)45
b)48
c)63
d)60
The standard deviation of the sample mean differences is approximately
a) 0.53
b)0.72
c)0.62
d)0.69