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 62, 61, 60, 64, 68, 73, 73, 74 and 61. T = Ex: 12.34 Margin of error at 99% confidence level = Ex: 1.23 99% confidence interval = [ Ex: 12.34 Ex: 12.34 ] [smaller value, larger value]

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CHALLENGE
5.2.1: Confidence intervals for population means.
ACTIVITY
336780.1709078.qx3zay7
Start
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 62, 61, 60, 64, 68, 73, 73, 74 and 61.
* = Ex: 12.34
Margin of error at 99% confidence level = Ex: 1.23
99% confidence interval = [ Ex: 12.34
Ex: 12.34 ]
[smaller value, larger value]
1
2
Check
Next
Transcribed Image Text:CHALLENGE 5.2.1: Confidence intervals for population means. ACTIVITY 336780.1709078.qx3zay7 Start 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 62, 61, 60, 64, 68, 73, 73, 74 and 61. * = Ex: 12.34 Margin of error at 99% confidence level = Ex: 1.23 99% confidence interval = [ Ex: 12.34 Ex: 12.34 ] [smaller value, larger value] 1 2 Check Next
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