You wish to compare the prices of apartments in two neighboring towns. You take

Question

You wish to compare the prices of apartments in two neighboring towns. You take a simple random sample of 12 apartments in town A and calculate the average price of these apartments. You repeat this for 15 apartments in town B. Let 1 represent the true average price of apartments in town A and 2 the average price in town B. If we were to use the pooled t test, what would be the degrees of freedom? 14 11 25 12 You wish to compare the prices of apartments in two neighboring towns. You take a simple random sample of 12 apartments in town A and calculate the average price of these apartments. You repeat this for 15 apartments in town B. Let 1 represent the true average price of apartments in town A and 2 the average price in town B. If we were to use the pooled t test, what would be the degrees of freedom? 14 11 25 12

Explanation / Answer

ONLY DEGREES OF FREEDOM IS ASKED.

Let

Sample 1 =Apartment inTown A

Sample 2 = Apartment in Town B

Given:

n1 = Size of sample 1 = 12

n2 = Size of Sample 2 = 15

Degrees of freedom = n1 + n2 - 2

                            = 12 + 15 - 2

                           = 25

So,

Correct option: 25

n1

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