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May 25, 2015

Homework Help: statistic help please

Posted by shantel on Sunday, March 16, 2014 at 5:34pm.

2. A survey of 259 families was made to determine their vacation habits. The two way table below sorts the families by location and the vacations by the length of the vacation.

Rural Suburban Urban Total
1–7 days 80 39 37 156
8ormore days52 32 19 103
Total 132 71 56 259


What is the probability that a randomly selected family was suburban given that they spent 8 or more days on vacation? (1 point)
0.12
0.31
0.45
0.50
28.24

You draw one card from a shuffled standard deck of cards (cards are in four suits —red diamonds, red hearts, black clubs, and black spades— and are numbered 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K, A).

a) What is the probability of drawing a red card?
b) What is the probability of drawing a queen?
c) What is the probability of drawing a red queen?
d) What is the probability of drawing a queen given that you drew a face card (face cards are jacks, queens, and kings)?

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