Question

You intend to estimate a population mean μμ with the following sample.

37.2

33.3

32.1

49

60

44.8

42.2

35.7

44.6

46.7

32.9

You believe the population is normally distributed. Find the 80% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to twp decimal places (because the sample data are reported accurate to one decimal place).

80% C.I. =

Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.

Answer 1

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