23) a. H0 : d = D0
Hx : d > D0
b. 1.94 > 1.1453 Do not reject H 0
c. The p-value is 1.1456. Because the p-value is more than
= 0.05, we can accept H0
d. p-value = 1.1456
e. These samples should be treated as dependent.
24) a. H0: d 0
2) A. The p-value is .9332
Since x=.05, do not reject the null hypothesis.
B. The p-value is .0122
Since x= .02, reject the null hypothesis.
C. The p-value is .0358
Since x= .05, reject the null hypothesis.
D. The p-value is .1706
7) a. 9.49
13) a .0968
d With a larger sample size, the standard of the mean decreases & the sample means tend to move
closer to the population mean of 93 minutes. Therefore, the probabili
a. The events are not mutually exclusive. The event of the coin coming up heads can occur at the
same time as rolling a four during the experiment.
b. The events are i