Question

You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 55 64.2 56.2 59.4 53.2 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

x: temperatures

sr.no.	x	x-x̅	(x-x̅)2
1	55	-2.6	6.76
2	64.2	6.6	43.56
3	56.2	-1.4	1.96
4	59.4	1.8	3.24
5	53.2	-4.4	19.36
Total	288		74.88
mean=x̅	Total/5
x̅=	57.6