AnswersAlgebra IIStatistics and Probability

Statistics and Probability — Test Answers

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21
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Glenda checks the computer monitors made at her company for defects. It has been shown that 0 point 5 percent of the monitors are defective. She decides to check several monitors and record if they are defective. Which of the following will make this process into a binomial experiment?

A
Glenda checks the monitors until she has 300 non-defective monitors.
B
Glenda chooses to check 300 monitors.
C
Glenda checks the monitors until she has 300 defective monitors.
D
Glenda checks 300 monitors and records the number that are defective until she gets greater than 0 point 5 percent defective monitors.
22
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How do the mean and median change from plot 1 to plot 2?

A
The mean remains the same, and the median decreases.
B
The mean and median remain the same.
C
The mean and median decrease.
D
The mean decreases, and the median remains the same.
23

How can the graph be adjusted to show the skew?

A
The scale on the y -axis can be decreased to show only the numbers 0 - 5 .
B
The interval on the y -axis can be changed to show only the relevant numbers, 3 and 5 .
C
The intervals on the x -axis can be changed to be continuous and consistent.
D
The scale on the x -axis can be increased to show the interval 25 - 29 .
24

How could the graph be redrawn so that the difference in monthly electric cost does not appear as great?

A
The scale on the y -axis could be changed to 0 - 150 .
B
The interval on the y -axis could be changed to count by 1 s.
C
The scale on the y -axis could be changed to 100 - 120 .
D
The interval on the y -axis could be changed to count by 20 s.
25

Which statement is true about the data set?

A
The data is symmetric.
B
It has a range of 52 pages.
C
The value of the first quartile is 13.
D
Its median is greater than its mode.

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