Question
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3
inches. The heights of 9
randomly selected students are 67
, 63
, 67
, 62
, 62
, 71
, 66
, 61
and 71
.
x
=
Margin of error at 95%
confidence level =
95%
confidence interval = [
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Boundary Value Problems And Partial Differential Equations
Authors: David L Powers, Powers Shelley
6th Edition
0080884415, 9780080884417
