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AL AND JOE ARE TWO COUNTY SHERIFF’S DEPUTIES ASSIGNED

AL AND JOE ARE TWO COUNTY SHERIFF’S DEPUTIES ASSIGNED

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Author: Christine Farr
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Question 1 of 20

5.0 Points

Al and Joe are two county sheriff’s deputies assigned to watch for traffic violations. Their arrest and conviction records for May and June are shown below.
 
Who had the best conviction percentage overall?
 
 
 
A. Al

 
 
B. Joe

 
 
C. They are equal

 
 
D. Cannot tell by the data available

 
 
Question 2 of 20

5.0 Points

Find the standard deviation for the given data. Round your answer to one more decimal place than the original data.15, 42, 53, 7, 9, 12, 14, 28, 47
 
 
 
A. 29.1

 
 
B. 16.6

 
 
C. 17.8

 
 
D. 15.8

 
 
Question 3 of 20

5.0 Points

The mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619, 626, and 633. Suppose that the student with the score 533 drops the seminar and is replaced by a student with a score of 585. What will happen to the mean and the median scores of the class?
 
 
 
A. Neither the mean nor the median will change.

 
 
B. Both the median and the mean will increase.

 
 
C. The median will increase; the mean will be unchanged.

 
 
D. The mean will increase; the median will be unchanged.

 
 
 
Question 4 of 20

5.0 Points

Find the mode(s) for the given sample data. 7.29, 7.41, 7.56, 7.29, 7.88, 7.99, 7.62
 
 
 
A. 7.56

 
 
B. 7.29

 
 
C. 7.577

 
 
D. 7.41

 
 
Question 5 of 20

5.0 Points

Use the range rule of thumb to approximate the standard deviation. 22,29, 21, 24, 27, 28, 25, 38
 
 
 
A. 3.50

 
 
B. 4.0

 
 
C. 4.25

 
 
D. 2.8


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