Author Question: For the normal approximation to the binomial distribution with p = 1/2 and n = 100, what is the ... (Read 58 times)

RODY.ELKHALIL · **on:** Jun 20, 2018

For the normal approximation to the binomial distribution with p = 1/2 and n = 100, what is the z-score corresponding to X = 60?

A) z = 0.4
B) z = 2.0
C) z = 0.2
D) z = 1.0

Question 2

A researcher conducts a repeated-measures study to evaluate a treatment with a sample of n = 16 participants and obtains a t statistic of t = 1.94. The treatment is expected to increase scores and the sample mean shows an increase. What is the correct decision for a hypothesis test using = .05?

A) Reject the null hypothesis with a one-tailed test but fail to reject with two tails.
B) Reject the null hypothesis with either a one-tailed or a two-tailed test.
C) Fail to reject the null hypothesis with either a one-tailed or a two-tailed test.
D) Fail to reject the null hypothesis with a one-tailed test but reject with two tails.