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What is the probability that out of the next 200 customers

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Question 1: A local convenience store estimates that 25% of its customers come in to buy milk. What is the probability that out of the next 200 customers, 60 or fewer will buy milk? (Answer as a percentage with two decimal places and include the % symbol).

Question 2: Suppose that we randomly select a sample of 64 measurements from a population having a mean equal to 20 and a standard deviation equal to 4. Calculate the probability that we will obtain a sample mean greater than 19. (Answer as a percentage with two decimal places and include the % symbol).

Question 3: A manufacturing process produces 5% defective items What is the probability that in a sample of 50 items, less than 1% will be defective? (Answer as a percentage with two decimal places and include the % symbol).

Reference no: EM132474291

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