The population of weekly expenditures on alcohol by students has a normal distribution with mean €20...

The population of weekly expenditures on alcohol by students has a normal distribution with mean €20 and standard deviation €5. If 100 students will be selected at random, what approximately is the expected number who will have expenditures above €25?

ii) Refer to Questionabove. What is the probability that the mean expenditure of the sample of 100 students will fall between €19 and €20. 5?

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orchestra answered 2 years ago

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