Test Statistics

What is the median of the scores?

• 21

• 16

• 17

• 19

What is the mode of the scores?

• 24

• 14

• 34

• 30

What is the range of the scores?

• 20

• 25

• 30

• 35

In how many games did the team score fewer than 10 points?

• 3

• 5

• 4

• 6

In how many games did the team score more than 20 points?

• 8

• 7

• 10

• 9

The mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between 2.6 and 3.8?

• 81.5%

• 47.5%

• 68%

• 95%

What is the percentage of male teenagers who have waist sizes greater than 30.5 inches?

• 2.5%

• 97.5%

• 16%

• 84%

The mean July daily rainfall in Hulu Kinta is 10 mm and the standard deviation is 1.5 mm

Assume that this data is normally distributed.
There are 31 days in July. How many days in July would you expect the daily rainfall to be between 10 mm and 11.5 mm? (If you get a decimal answer, round to the nearest whole number)

• 5

• 26

• 21

• 11

The heights of male students are Normally distributed with mean 1.7 m and standard deviation 0.2 m

In a population of 400 male students, how many would you expect to have a height greater than 2.1 m?

• 136

• 272

• 64

• 10

The number of accidents per week at a company is Normally distributed with a mean of 7 and a standard deviation of 2. What percentage of weeks would you expect a company to have more than 3 accidents?

• 16%

• 2.5%

• 84%

• 97.5%