Expert answer:Need help with Statistics Analysis 1 and the mathe

Answer & Explanation:need answers for these six questions.statistics__1_exam_3.docx
statistics__1_exam_3.docx

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4. 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.
10. The grocery expenses for six families were $80.86, $47.74, $57.92, $81.08, $75.18, and $88.08. Compute
the mean grocery bill. Round your answer to the nearest cent.
A. $71. 82
B. $73.79
C. $72.81
D. $71.81
12. The normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Find the median
of the data.
A. 2.79 in.
B. 3.45 in.
C. 3.35 in.
D. 2.45 in.
14. The number of vehicles passing through a pharmacy drive-up line with two windows during each 15-minute
period was recorded. The results are shown below. Find the median number of vehicles going through the line
in a fifteen-minute period.
16 8 24 22 30 19 18 27 11 15
17 24 26 23 7 25 21 16 20 14
A. 19.3
B. 20.1
C. 19.5
D. 19.6
15. Find the standard deviation for the given data. Round your answer to one more decimal place than the
original data.
22, 29, 21, 24, 27, 28, 25, 36
A. 4.8
B. 4.2
C. 2.8
D. 1.6
19. Find the mode(s) for the given sample data. 20, 49, 46, 43, 49, 43, 49, 20, 22
A. 43
B. 49
C. 20
D. 22
…
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