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

Let X denotes 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
The probabilities do not sum to exactly 1 due to rounding error.
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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Probability Distribution of Y Ideal Number Children P(r) Males 0.02 0.03 0.60 0.28 0.08 P(r) Females 0.01 0.55 0.31 0.11