Fifty samples of size 500 were drawn from a manufacturing process and the number of defectives in each sample was counted. The average of the sample proportion was 0.032 . The centerline for the p chart is:
a. 0.032
b. 16.0
c. 0.512
d. 0.968
e. 4.2
Question 2
The sampling distribution of the ratio of two independent sample variances selected randomly from normal populations with equal variances is:
a. a normal distribution
b. a t distribution
c. an F distribution
d. a binomial distribution
e. a chi-square distribution