Let X denote the response of a randomly selected person to the question, What is the ideal

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Let X denote the response of a randomly selected person to the question, €œWhat is the ideal number of children for a family to have?€ The probability distribution of X in the United States is approximately as shown in the table, according to the gender of the person asked the question.

Probability Distribution of X = Ideal Number of Children P(r) Females P(r) Males xr 0.01 0.02 0.03 0.03 0.55 0.60 0.31 0


a. Show that the means are similar, 2.50 for females and 2.39 for males.
b. The standard deviation for the females is 0.770 and 0.758 for the males. Explain why a practical implication of the values for the standard deviations is that males hold slightly more consistent views than females about the ideal family size.

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Statistics The Art And Science Of Learning From Data

ISBN: 9780321997838

4th Edition

Authors: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg

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