.33 .65 .67 .35 2- A sample of 1000 households was selected in Los Angeles to de
ID: 3070612 • Letter: #
Question
.33
.65
.67
.35
2- A sample of 1000 households was selected in Los Angeles to determine information concerning consumer behavior. Among the questions asked was “Do you enjoy shopping for clothing?” Overall, 650 answered yes. 450 males were interviewed, and 150 males answered yes.
What is the probability that a household answered no?
25%
75%
35%
65%
3- A sample of 1000 households was selected in Los Angeles to determine information concerning consumer behavior. Among the questions asked was “Do you enjoy shopping for clothing?” Overall, 650 answered yes. 450 males were interviewed, and 150 males answered yes.
What is the probability that a respondent was female?
45%
62.5%
55%
87.5%
4- A sample of 1000 households was selected in Los Angeles to determine information concerning consumer behavior. Among the questions asked was “Do you enjoy shopping for clothing?” Overall, 750 answered yes. 375 males were interviewed, and 150 males answered yes.
Given that the interviewed person is male, what is the probability that the person likes shopping for clothes?
50%
45%
40%
33%
5- Football teams toss a coin to see who will get their choice of kicking or receiving to begin a game. The probability that given team will lose the toss three games in a row is 0.125.
True
False
a..33
b..65
c..67
d..35
Explanation / Answer
2:
Since out of 1000, 650 answered no so the probability that a household answered no is
P(answered no) = 650 /1000 =0.650
Correct option is d.
3:
Out of 1000, 1000 - 450 =550 were female so the probability that a respondent was female is
P(female) = 550 /1000 =0.550
Correct option is c.
4:
Out of 375 males, 150 said yes so required probability is
P(yes | male) = 150 /375 = 0.40
Correct option is c.
5:
The probability of loosing a toss is 0.5. Since each toss is independent so the probability that given team will lose the toss three games in a row is 0.5*0.5 * 0.5 = 0.125
Answer: true
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