Suppose the mean height in inches of all 9th grade students at one...

Question

# Suppose the mean height in inches of all 9th grade students at one...

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 4 inches. The heights of 10

randomly selected students are 72, 62, 73, 72, 66, 61, 65, 74, 71 and 61. x¯=

Margin of error at 95% confidence level =

95% confidence interval =[ Ex. 12.34, Ex. 12.34]

[smaller value, larger value]

12

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## Step-by-step explanation

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