# Question

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.
\$37,500 ... 44,800
33,500 ..... 36,900
42,300 ..... 32,400
28,000 ..... 41,200
46,600 ..... 38,500
40,200 ..... 32,000
35,500 ..... 36,800

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