Question
Normally Distributed Housefly Wing Lengths length (x.1mm) frequency 36 1 37 1 38 2 39 2 40 4 41 6 42 7 43 8 44
Normally Distributed
Housefly Wing Lengths
length (x.1mm)
frequency
36
1
37
1
38
2
39
2
40
4
41
6
42
7
43
8
44
9
45
10
46
10
47
9
48
8
49
8
50
6
51
5
52
2
53
2
54
1
55
1
Normally Distributed | Housefly Wing Lengths |
length (x.1mm) | frequency |
36 | 1 |
37 | 1 |
38 | 2 |
39 | 2 |
40 | 4 |
41 | 6 |
42 | 7 |
43 | 8 |
44 | 9 |
45 | 10 |
46 | 10 |
47 | 9 |
48 | 8 |
49 | 8 |
50 | 6 |
51 | 5 |
52 | 2 |
53 | 2 |
54 | 1 |
55 | 1 |
Find the mean and standard deviation of the sample of housefly wing lengths.
List the data values that are within 2 standard deviations of the mean. Justify your answer.
What percentage of the data values are within 2 standard deviations of the mean?
Is this consistent with the Empirical Rule? Explain.
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Auditing Cases An Active Learning Approach
Authors: Mark S. Beasley, Frank A. Buckless, Steven M. Glover, Douglas F. Prawitt
2nd Edition
0130674842, 978-0130674845
