Probability & Statistics Review

Question 1

If Jim has 3 shirts, 4 pairs of pants, and 6 ties, how many outfits can he make?

Accepted Answer

72

Question 2

Evaluate C(9,5)

Accepted Answer

126

Question 3

What is the probability of selecting a girl?

Accepted Answer

7 / 22, 35 / 110

Question 4

What is the probability of rolling a 6 on a die, and then rolling an even number?

Accepted Answer

1/12

Question 5

What is the probability of landing on a prime number?

Accepted Answer

5/8

Question 6

What is the probability of drawing a king, and then a card higher than a nine?

Accepted Answer

19 / 663, 76 / 2652

Question 7

An 8-sided die is rolled 4 times. How many outcomes are there?

Accepted Answer

4096

Question 8

Evaluate 6!

Accepted Answer

720

Question 9

When drawing a card from a standard deck, what are the odds that it is a heart?

Accepted Answer

1 : 3, 13 : 39

Question 10

What is the probability of spinning and landing on an 8?

Accepted Answer

1/8

Question 11

If you add a number greater than 60, what happens to the mean?

Accepted Answer

Increases

Question 12

What is the probability of selecting a girl who plays football?

Accepted Answer

12 / 110, 6 / 55

Question 13

What is the interquartile range of this data set?

Accepted Answer

31

Question 14

What is the probability of selecting a person who does not play football?

Accepted Answer

28 / 55, 56 / 110

Question 15

When drawing a card from a standard deck, what are the odds that it is a ten or higher?

Accepted Answer

20 : 32, 5 : 8

Question 16

What is the lower quartile of this data set?

Accepted Answer

17

Question 17

What is the upper quartile of this data set?

Accepted Answer

48

Question 18

What is the most frequently occurring number?

Accepted Answer

55

Question 19

Evaluate P(9,5)

Accepted Answer

15120

Question 20

What is the mean, median, mode, and range of this set of data?

Accepted Answer

mean:33 median: 35 mode: 22 range: 48

Questions 20