Whatis the first big change that American drivers made due to higher gas prices? According to an Access America survey, 30% said that it was cutting recreational driving. However. 27% said that it was consolidating or reducing errands. If these figures are true for all American drivers, and If 20 such drivers are randomly sampled and asked what Is the first big change they made due to higher gas prices, Whatis the probability that exactly 8 said that it was consolidating or reducing errands? Whatis the probability that none of them said that It was cutting recreational driving? What is the probability that more than 7 said that it was cutting recreational driving?

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A:

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Q: What is the probability that the two sample proportions will differ by more than

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Q: . 10% Chance B. 11% Chance C. 12% Chance D. 17% Chance

A: We have to use the data given in table and basic probability theory to get the probabilities.

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A: p = 0.77 n = 320 million  ==============================

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.