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according to survey records, 75.4% of women aged 20-24 have never been married. In a random sample of 250 young women aged 20-24, find the

according to survey records, 75.4% of women aged 20-24 have never been married. In a random sample of 250 young women aged 20-24, find the mean, variance, and standard deviation for the number of women who are or who have been married.

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