Answer (Choose 1 answer)
An article in Technometrics (Vol.19, 1977, p.425) presents the following data on the motor fu of several blends of gasoline:
88.5; 98.8; 89.6
Find the sample mean and sample variance of these data.
A. None of the other choices is correct
B. 92.1 and 18.2
C. 87.22 and 8.59
D. 93.22 and 5.426
E. 92.3 and 31.99
E12
