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Question: a study by allstate insurance co finds that 82 of...

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A study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while driving (The Wal/Street Journal, May 5, 2010, Suppose a random sample of 100 teen drivers is taken. [You may find it useful to reference the z table.] a-1. Calculate the standard error for the sampling distribution of the sample proportion. (Do not round intermediate calculations. Round your answer to 4 decimal places.) Standard error a-2. Is the sampling distribution of the sample proportion approximately normal? O Yes No b. What is the probability that the sample proportion is less than 0.80? (Round value to 2 decimal places, and final answer to 4 decimal places.) Probability

c. What is the probability that the sample pr places, and final answer to 4 decimal places) oportion is within ± 0.02 of the population proportion? (Round z value to 2 decimal Probablity
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