A certain town has 25,000 families. The average numb er of children per family is 2.5, with

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A certain town has 25,000 families. The average number of children per family is 2.5, with an SD of 0.70. 20% of the families have not children at all. The distribution is normal.

(a) a simple random sample of 900 families is chosen. 18% of 900 families has not children. Is this reasonable.

(b) Out of 900 families, the average number of children per family is 2.6. Is this reasonable?

Related Book For answer-question

Statistics for Management and Economics

ISBN: 978-1337093453

11th edition

Authors: Gerald Keller

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Posted Date: Jul 15, 2021 11:15 AM

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A certain town has 25,000 families. The average numb er of children per family is 2.5, with

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Statistics for Management and Economics

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