Question :
61.Refer to Exhibit 5-8. What the random variable in this : 1329672
61.Refer to Exhibit 5-8. What is the random variable in this experiment?
a.the 60% of female students
b.the random sample of 8 students
c.the number of female students out of 8
d.the student body size
62.Refer to Exhibit 5-8. What is the probability that among the students in the sample exactly two are female?
a.0.0896
b.0.2936
c.0.0413
d.0.0007
63.Refer to Exhibit 5-8. What is the probability that among the students in the sample at least 7 are female?
a.0.1064
b.0.0896
c.0.0168
d.0.8936
64.Refer to Exhibit 5-8. What is the probability that among the students in the sample at least 6 are male?
a.0.0413
b.0.0079
c.0.0007
d.0.0499
Exhibit 5-9
Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected.
65.Refer to Exhibit 5-9. What is the random variable in this experiment?
a.the 40% of female registered voters
b.the random sample of 5 voters
c.the number of female voters out of 5
d.the number of registered voters in the nation
66.Refer to Exhibit 5-9. The probability that the sample contains 2 female voters is
a.0.0778
b.0.7780
c.0.5000
d.0.3456
67.Refer to Exhibit 5-9. The probability that there are no females in the sample is
a.0.0778
b.0.7780
c.0.5000
d.0.3456
Exhibit 5-10
The probability that Pete will catch fish on a particular day when he goes fishing is 0.8. Pete is going fishing 3 days next week.
68.Refer to Exhibit 5-10. What is the random variable in this experiment?
a.the 0.8 probability of catching fish
b.the 3 days
c.the number of days out of 3 that Pete catches fish
d.the number of fish in the body of water
69.Refer to Exhibit 5-10. The probability that Pete will catch fish on exactly one day is
a..008
b..096
c..104
d..8
70.Refer to Exhibit 5-10. The probability that Pete will catch fish on one day or less is
a..008
b..096
c..104
d..8
