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Back to 7.3 Using the Central Limit Theorem

7.3 Exercise 59

Avg difficulty 2.5


For each problem, wherever possible, provide graphs and use the calculator.

Certain coins have an average weight of 5.201 grams with a standard deviation of 0.065 g. If a vending machine is designed to accept coins whose weights range from 5.111 g to 5.291 g, what is the expected number of rejected coins when 280 randomly selected coins are inserted into the machine?

OpenStax Introductory Statistics 2e, 7.3 Using the Central Limit Theorem, exercise 59

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.