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Mathematics, 18.05.2021 19:20 que40

1.An appliance store sells major appliances (such as dishwashers, washing machines, dryers); for an additional fee, the store offers an extended service contract beyond the warranty period. The owner of this appliance store notes that she sold 145 dishwashers during the past 6 months; 45% of these customers also purchased the extended service contract. To maintain customer relations, the owner likes to contact her customers to see how they are enjoying their new appliances. She conducts a random sample of 35 of these customers. a)What is the probability that fewer than 40% of the customers in the sample purchased the service contract

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