Q1) Dole Pineapple, Inc., is concerned that 16-ounce can of sliced pineapple is being overfilled. Suppose standard deviation of process is .03 ounces. Quality control department took arbitrary sample of 50 cans and determined that arithmetic mean weight was 16.05 ounces. At 5 percent level of significance, can we conclude that mean weight is greater than 16 ounces? Find out the p-value.

Q2) If 2 samples are chosen from same population, under what situation will 2 samples have exactly the same t statistic?

a) If sample size (n) is same for both samples.

b) If samples are same size and have the same mean.

c) If samples are same size and have same mean and have same sample variance.

d) None of other options are right.

Q3) A sample is chosen from the population with µ = 80. If sample has the mean of M = 85, which of the following will create the largest value for t?

a) n = 9 and s2 = 16

b) n = 9 and s2 = 4

c) n = 25 and s2 = 16

d) n = 25 and s2 = 4

Q4) If the sample consists of n = 15 individuals, then compute df value for the t statistic?  

a) 16

b) 15

c) 14

d) Can't be determined from the information given

Q5) A sample of n = 25 scores creates a t statistic of t = -2.05. If researcher is using two-tailed test with α = .05, right statistical decision is _____.

a) Researcher can reject null hypothesis with α = .05 but not with α = .01.

b) Researcher can reject null hypothesis with either α = .05 or α = .01.

c) Researcher should fail to reject null hypothesis with either α = .05 or α = .01.

d) It is impossible to make decision about H0 without more information.