QUESTION 5 2 points Saved A researcher is interested in testing to determine if

Question

QUESTION 5 2 points Saved A researcher is interested in testing to determine if the mean price of a casual lunch is different in the city than it is in the suburbs. The null hypothesis is that there is no difference in the population means (i.e. the difference is zero). The alternative hypothesis is that there is a difference (i.e. the difference is not equal to zero). He randomly selects a sample of 9 lunch tickets from the city population resulting in a mean of $14.30 and a standard deviation of $3.40. He randomly selects a sample of 14 lunch tickets from the suburban population resulting in a mean of $11.80 and a standard deviation $2.90. He is using an alpha value of .10 to conduct this test. Assuming that the populations are normally distributed, the degrees of freedom are 21 o 15

Explanation / Answer

Ans 5

df = n1+n2-2

df = 9+14-2 = 21

Chegg says us to do only the first question when multiple questions are asked or the first 4 parts of a question when multiple parts are asked

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