Hypothesis Test for Two Populations including
A real estate company is interested in testing whether, on average, families in Gotham have been living in their homes different amounts of time than families in Metropolis have. Random samples yield the following results. Assuming equal variances and normal distributions. What is the value of the pooled variance estimate?
Gotham | Metropolis | |
number sampled: | 100 | 150 |
Average: | 35 months | 45 months |
Standard deviation: | 20 months | 25 months |
Group of answer choices
a. 512.5
b. 253.13
c. 539.31
d. 535.18
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