A grocery store manager wants to know if displaying cranberries near the entrance to the store increases the proportion of shoppers who buy them. To determine this, the manager flips a coin each morning to decide whether to place the cranberries near the entrance that day or to locate them in the produce section. The manager takes a random sample of shoppers over several days and calculates p, = the proportion of shoppers who buy cranberries when they are near the store entrance, and p, = the proportion of shoppers who buy cranberries when they are in the produce șection. Which of the following is a correct set of hypotheses for the appropriate test of significance?

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Author:Amos Gilat
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A grocery store manager wants to know if displaying cranberries near the entrance to the store increases the
proportion of shoppers who buy them. To determine this, the manager flips a coin each morning to decide
whether to place the cranberries near the entrance that day or to locate them in the produce section. The
manager takes a random sample of shoppers over several days and calculates p,= the proportion of
shoppers who buy cranberries when they are near the store entrance, and p,= the proportion of shoppers
%3D
who buy cranberries when they are in the produce şection. Which of the following is a correct set of
hypotheses for the appropriate test of significance?
Because most of the interval is negative, there is convincing evidence that a greater proportion of Speedy
Airlines flights are on time.
Because the point estimate (-0.05) is negative, there is convincing evidence of a difference in the
population proportions.
O Because 0 is in the interval, there is convincing evidence of a difference in the population proportions.
Because the point estimate (-0.05) is negative, there is not convincing evidence of a difference in the
population proportions.
Because 0 is in the interval, there is not convincing evidence of a difference in the population
proportions.
O o
Transcribed Image Text:A grocery store manager wants to know if displaying cranberries near the entrance to the store increases the proportion of shoppers who buy them. To determine this, the manager flips a coin each morning to decide whether to place the cranberries near the entrance that day or to locate them in the produce section. The manager takes a random sample of shoppers over several days and calculates p,= the proportion of shoppers who buy cranberries when they are near the store entrance, and p,= the proportion of shoppers %3D who buy cranberries when they are in the produce şection. Which of the following is a correct set of hypotheses for the appropriate test of significance? Because most of the interval is negative, there is convincing evidence that a greater proportion of Speedy Airlines flights are on time. Because the point estimate (-0.05) is negative, there is convincing evidence of a difference in the population proportions. O Because 0 is in the interval, there is convincing evidence of a difference in the population proportions. Because the point estimate (-0.05) is negative, there is not convincing evidence of a difference in the population proportions. Because 0 is in the interval, there is not convincing evidence of a difference in the population proportions. O o
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