Mathematics, 01.07.2021 15:10, Animallover100

The U. S. average for state and local taxes for a family of four is $4172. A random sample of 20 families in a northeastern state indicates that they paid an annual amount of $4560 with a standard deviation of $1590. At α = 0.05, is there sufficient evidence to conclude that they pay more than the national average of $4172?

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The U. S. average for state and local taxes for a family of four is $4172. A random sample of 20 fam...