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The manager of a restaurant in a commercial building has determined that the proportion of customers who drink tea is 14% What is the probability that in the next 100 customers at least 10% will be

The manager of a restaurant in a commercial building has determined that the proportion of customers who drink tea is 14%. What is the probability that in the next 100 customers at least 10% will be tea drinkers? 9.38 A commercial for a manufacturer of household appliances claims that 3% of all its products require a service call in the first year. A consumer protection association wants to check the claim by surveying 400 households that recently purchased one of the company’s appliances. What is the probability that more than 5% require a service call within the first year? What would you say about the commercial’s honesty if in a random sample of 400 households 5% report at least one service call?

Jun 22 2020 View more View Less

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