A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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A government bureau would like to estimate the average annual contributions to charity by the members of Generation Y (people born in the United States in the years 1981 through 1991). The following data show the annual contributions to charity for a random sample of 18 individuals in this age group. Complete parts a and b.
$20
|
$750
|
$395
|
$160
|
$200
|
$515
|
|
$275
|
$410
|
$445
|
$192
|
$455
|
$325
|
|
$60
|
$560
|
$405
|
$150
|
$650
|
$230
|
a. Construct 99% confidence interval with these data to estimate the average annual contributions to charity for this age group.
The 99% confidence interval is from $------ to $------
(Round to two decimal places as needed. Use ascending order.)
b. What is the margin of error for this sample?
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