32.
How does the shape of the t distribution compare to the normal distribution?
A.
The t distribution is taller and less spread out, especially when n is large.
B.
The t distribution is taller and less spread out, especially when n is small.
C.
The t distribution is flatter and more spread out, especially when n is large.
D.
The t distribution is flatter and more spread out, especially when n is small.
33.
Suppose you wanted to apply a one-tailed test as opposed to a two-tailed test. How would
you covert a significance of p = .284?
A.
.
284 / 2 = .142
B.
.284 × 2 = .568
C.
.284 / 0.05 = 5.68
D.
.284 × 0.05 = .0142
34.
A research report summarizes the results of a t-test by stating:
t(35)=5.2, p<0.05
.
Which of the following is a correct interpretation of this report?
A.
The H
0
was not rejected and the probability of a Type I error is less than .05.
B.
The H
0
was not rejected and the probability of a Type II error is less than .05.
C.
The H
0
was rejected and the probability of a Type I error is less than .05.
D.
The H
0
was rejected and the probability of a Type II error is less than .05.
35.
Which of the following is true about a 95% confidence interval of the mean of a given
sample:
A.
95 out of 100 sample means will fall within the limits of the confidence interval.
B.
There is a 95% chance that the population mean will fall within the limits of the
confidence interval.
C.
95 out of 100 population means will fall within the limits of the confidence interval.
D.
There is a .05 probability that the population mean falls within the limits of the
confidence interval.
36.
What effect would increasing the sample size have on a confidence interval?
A.
The confidence interval would increase in size.
B.
The confidence interval would decrease in size.
C.
The confidence interval is unaffected by sample size.
D.
The confidence interval could either increase or decrease in size.
37.
In an independent
t
-test output of SPSS, the Levene’s test result is
p
= .006. What can we
infer from this number?
A.
The means of both groups are assumed to be unequal.
B.
The means of both groups are assumed to be equal.
C.
The variances of both groups are assumed to be unequal.
D.
The variances of both groups are assumed to be equal.
