You want to obtain a margin of error of 2 years for your 95% interval estimate.  What is the minimum sample size to reach this margin of error?  Use the standard deviation from your previous sample as the planning value.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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12 You want to obtain a margin of error of 2 years for your 95% interval estimate.  What is the minimum sample size to reach this margin of error?  Use the standard deviation from your previous sample as the planning value.
 
 
a 59              
b 74              
c 93              
d 116              
Next two questions are related to the following sample data
You gather a random sample of court records from the files of adults charged with assault to
obtain an interval estimate of the mean age of those charged. You obtain the following sample of
age data.
29
24
40
45
40
38
48
41
32
24
20
34
34
37
31
27
32
22
38
41
25
28
43
20
20
29
48
20
26
41
Transcribed Image Text:Next two questions are related to the following sample data You gather a random sample of court records from the files of adults charged with assault to obtain an interval estimate of the mean age of those charged. You obtain the following sample of age data. 29 24 40 45 40 38 48 41 32 24 20 34 34 37 31 27 32 22 38 41 25 28 43 20 20 29 48 20 26 41
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