Mathematics, 16.06.2020 22:57 quintinlarrieu
An economist wants to test if there is any difference in income between Escambia county and Miami-Dade county in Florida. To do this, she collects random samples of residents from both these counties. The information collected from these samples is tabulated below. Assume that both the populations are normally distributed with equal population variances.
Escambia County (Population 1) Miami-Dade County (Population 2)
n1 = 11 n2 = 15
Mean= 36,700 Mean = 34 , 700
Stdv = 7800 Stdv = 7375
Required:
a. Set up the null and alternative hypotheses to test the economist’s claim.
b. Find the value of the standardized test statistic.
c. At 5% significance level find the rejection region and state your decision
Answers: 1
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