A company surveyed 2,600 North American airline passengers and reported that approximately 75% said that they...
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A company surveyed 2,600 North American airline passengers and reported that approximately 75% said that they carry a smartphone when they travel. Suppose that the actual percentage is 75%. Consider randomly selecting ten passengers and define the random variable x to be the number of the ten selected passengers who travel with a smartphone. The probability distribution of x is the binomial distribution with n 10 and p = 0.75. (Round your answers to three decimal places.) (a) Calculate p(6). p(6) - (b) Calculate P(x ≤ 7). P(x ≤ 7) = (c) Calculate the probability that more than half of the selected passengers travel with a smartphone. A company surveyed 2,600 North American airline passengers and reported that approximately 75% said that they carry a smartphone when they travel. Suppose that the actual percentage is 75%. Consider randomly selecting ten passengers and define the random variable x to be the number of the ten selected passengers who travel with a smartphone. The probability distribution of x is the binomial distribution with n 10 and p = 0.75. (Round your answers to three decimal places.) (a) Calculate p(6). p(6) - (b) Calculate P(x ≤ 7). P(x ≤ 7) = (c) Calculate the probability that more than half of the selected passengers travel with a smartphone.
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