J.D. Power and Associates says that 70 percent of car buyers now use the Internet for...

J.D. Power and Associates says that 70 percent of car buyers now use the Internet for research and price comparisons. (a) Find the probability that in a sample of 7 car buyers, all 7 will use the Internet. (Round your answer to 4 decimal places.) Probability (b) Find the probability that in a sample of 7 car buyers, at least 4 will use the Internet. (Round your answer to 4 decimal places.) Probability (c) Find the probability that in a sample of 7 car buyers, more than 3 will use the Internet. (Round your answer to 4 decimal places.) Probability (d) Find the mean and standard deviation of the probability distribution. (Round your mean value to 2 decimal places and standard deviation to 4 decimal places.) Mean Standard deviation

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Organizations such as J.D. Power and Associates use the proportion of owners likely to repurchase a...

Organizations such as J.D. Power and Associates use the proportion of owners likely to repurchase a particular automobile as an indication of customer loyalty for the automobile. An automobile with a greater proportion of owners likely to repurchase is concluded to have greater customer loyalty. A study was conducted to compare the customer loyalty for three automobiles: Chevrolet Impala, Ford Fusion, and Honda Accord. The study contained 500 respondents and the data is summarized in the Microsoft Excel Online file...

In recent times, the percent of buyers purchasing a new vehicle via the Internet has been large enough that local automobile

In recent times, the percent of buyers purchasing a new vehicle via the Internet has been large enough that local automobile dealers are concerned about its impact on their business. The information needed is an estimate of the proportion of purchases via the Internet. How large of a sample of purchasers is necessary for the estimate to be within 2 percentage points with a 98% level of confidence? Current thinking is that about 8% of the vehicles are purchased via...

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J.D. Power and Associates says that 70 percent of car buyers now use the Internet for...

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Organizations such as J.D. Power and Associates use the proportion of owners likely to repurchase a...

In recent times, the percent of buyers purchasing a new vehicle via the Internet has been large enough that local automobile