From Open Intro Statistics) The National Survey of Family Growth conducted by the Center for Disease Control gathers information on family life, marriage and divorce, pregnancy, infertility, use of contraception, and men’s and women’s health. One of the variables collected on this survey is the age at first marriage. 5,534 women, randomly sampled between 2006 and 2010, had a mean age of first marriage of 23.44 years with a standard deviation of 4.72 years. Find a 90% confidence interval for the mean age of first marriage of women in the population.

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