A company is introducing a new product. Historically, the co…

A company is introducing a new product. Historically, the company’s products are a success 60% of the time and a failure 40% of the time. Therefore, the prior probability of success is 0.6, and the prior probability of failure is 0.4. The company hires an analyst to predict whether the product will be a success. The analyst’s accuracy in predicting the performance of the product is 80%. (In other words, a product that succeeds will be predicted to be successful 80% of the time and a failure 20% of the time.) Given that the analyst predicts the product to be successful, what is the probability that the product will be a success? Provide your answer as a decimal number rounded to three decimal places.

A manager of a popular retail store knows that the distribut…

A manager of a popular retail store knows that the distribution of purchase amounts by its customers is approximately normal, with a mean of $50 and a standard deviation of $15. What is the probability that a randomly selected customer will spend less than $20? (enter your answer as a decimal number rounded to three decimal places)

A manufacturer of metal pistons finds that on the average, 5…

A manufacturer of metal pistons finds that on the average, 5% of his pistons are rejected because they are either oversize or undersize. What is the probability that a batch of 20 pistons will contain no more than 2 rejects? (enter your answer as a decimal number rounded to three decimal places)