Suppose a random sample of 14 people 30-39 years of age produced the household incomes shown here. Use these data to determine a point estimate for the population variance of household incomes for people 30-39 years of age and construct a 95% confidence interval. Assume household income is normally distributed.

$37,600

44,800

33,500

38,50042,300

32,40029,10041,200

46,60038,500

40,200

30,60035,50036,800

Appendix A Statistical Tables

The point estimate is

enter the point estimate .

enter the lower value of the interval

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enter the upper value of the interval