Question5. Please answer the following questions as either\"TRUE\" or \"FALSE\" (Write out either “True” or “False”)

A. A normal distribution is characterized by its mean and itsdegrees of freedom. ______________

B. A paired t-test is considered a nonparametric test.______________

C. A 93% confidence interval for µ is that numerical intervalconstructed to contain 93% of the values of µ. ____________

D. A 94% confidence interval for a mean is narrower than a 93%confidence interval. ______________

E. A regression analysis involving 93 patients would have 92degrees of freedom. ______________

F. A negative correlation coefficient indicates a poor linearrelationship. ______________

G. For a two-tailed hypothesis test comparing two group means,assuming a normal distribution and standard deviation σ known, ap-value < 0.05 is analogous to | z-value | > 1.96.______________

H. An increase in the Type I error will decrease Power,everything else held constant. ______________

I. If the Type II error of a hypothesis test is equal to 0.06,the Power of the test is 0.94. __________

Multiple Choice: (Please circle the correct answer!)

J. The normal approximation may be used as an approximation tothe binomial distribution when: (n=sample size)

a) the sample size is at least 30

b) np and nq are both less than 5 [p=P(success), q = 1-p]

c) np and nq are both greater or equal to 5 [p=P(success), q =1-p]

K. For the normal distribution, with continuous data and thepopulation variance known, the standard error of the mean isdetermined by the:

a) The population mean and the sample size

b) The population standard deviation and the sample size

c) The population mean and the population standard deviation

d) Sample mean and the population standard deviation

d) np is greater than or equal to 30

L. A 95% confidence interval for a population mean birth weightwas determined to be 2100 to 2700 grams. Assume birth weights arenormally distributed. The p-value for a test of the null hypothesisH0: Uo= 3000 grams versus Ha: Uo # 3000 grams is approximately.

a) 0.10

b) 0.06 e) 0.25

c) < 0.05

d) > 0.05