Question

30.If one were to perform a hypothesis test using the following    hypotheses: H0: shipment is GOOD and H1: shipment is BAD      Which of the two types of errors is called the Producer’s risk?   

a. Type I (alpha)

b. Type II (beta)

c. Both (a) and (b)

d. Neither (a) nor (b)

31. When the sample size as a proportion of the population size (n/N) gets larger, the value of the finite correction multiplier approaches which value?

a. 0

b. 1

c. None of the above

33. 5-week diet program is claimed be effective in reducing the weights of participants in the program. Skeptical about the claim, you randomly select 10 applicants and weigh each one before and after the 5-week period. This problem involves:

a. Comparison of two population proportions   

b. Comparison of means of two independent samples   

c. Comparison of means two dependent samples   

d. Comparison of variations of two independent samples

34.Which of the following sampling distributions would be used in comparing means of two populations, with n1 = 32, n2= 40?

a. Z test

b. pooled t test (or equal variances t test)

c. unpooled t test (or unequal variances t test)

d. Binomial

Answer 1

30)

Producer's risk is rejection of a good lot in Statisticalquality Control(SQC)

which is equivallent to rejection of null hypothesis when it is true or type I error.

So, a. Type I (alpha) is the answer.

31)

Let N=10,n=5,8,9

for n=5

FPC=0.471

for n=8,

FPC=0.943

n=9

FPC=0.333

When the sample size as a proportion of the population size (n/N) gets larger, the value of the finite correction multiplier approaches to N. So it will tend to 0.

So,

a. 0 is the answer.

33)

As the same applicants were used so ,c. Comparison of means two dependent samples is the answer.

34)

a. Z test