Probability and Stats

What is the theoretical probability of rolling a multiple of 2 on a 6-sided die?

• 1/2

• 1/3

• 1/6

• 1/12

A coin was flipped 40 times and landed on heads 12 times. What is the experimental probability of the coin landing on heads?

• 30%

• 40%

• 50%

• 70%

For lunch, there are 9 peanut-butter-and-jelly sandwiches and 6 cheese sandwiches. For dessert, there are 8 cookies and 12 brownies. What is the probability you are given a peanut-butter-and-jelly sandwich AND a cookie?

• 24%

• 100%

• 40%

• 60%

What is the interquartile range of plot A?

• 6

• 8

• 15

• 28

What percent of students have heights between 60 inches and 66 inches?

• 75%

• 50%

• 100%

• 25%

What are the values 2 standard deviations below and above the mean for the data set 10, 12, 23, 23, 16, 23, 21, 16?

• 4.9 and 18

• 13.1 and 22.9

• 8.2 and 27.8

• 3.3 and 32.7

A promotion has a 15% chance of winning a prize. Suppose you have 6 cards. As a percentage, what is the probability that 3 cards are winners?

• 4.1

• 6.8

• 0.2

• 9.0

A multiple-choice quiz has 7 questions with four options each. If you guess every answer, what is the probability you get LESS THAN 2 questions correct? (as a percentage)

• 44.5

• 31.1

• 62.2

• 75.6

The mean number of wins a baseball team gets per year is 81 wins. The standard deviation is 9 wins. What would be the sections that are three standard deviations from the mean? (select BOTH below and above)

• 54

• 72

• 90

• 108

The mean number of hours employees work at a business is 37.8. The standard deviation is 3.6 hours. What would be the sections that are one standard deviation from the mean? (select BOTH below and above)

• 27.0

• 34.2

• 41.4

• 48.6