Question

You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures:

6.2

26.5

14.7

13.8

6.3

16.1

10.1

13.9

-0.5

22.9

Find the 98% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place).

98% C.I. =

Answer 1

The data provided is:

	Data
	6.2
	26.5
	14.7
	13.8
	6.3
	16.1
	10.1
	13.9
	-0.5
	22.9
Count	10
Mean	13
St. Dev	8

We need to construct the 98% confidence interval for the population mean μ. The following information is provided:

The critical value for α=0.02 and df=n−1=9 degrees of freedom is .The corresponding confidence interval is computed as shown below:

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