Breast feeding sometimes results in a temporary loss of bone mass as calcium is

Question

Breast feeding sometimes results in a temporary loss of bone mass as calcium is depleted in the mother's body to provide for milk production. An investigation gave the following data on total body bone mineral content (g) for a sample of mothers both during breast feeding (B) and in the postweaning period (P).

Do the data suggest that true average total body bone mineral content during postweaning exceeds that during breast feeding by more than 25 g? State and test the appropriate hypotheses using a significance level of 0.05. (Use a statistical computer package to calculate the P-value. Use P B. Round your test statistic to two decimal places and the P-value to three decimal places.)

Subject 1 2 3 4 5 6 7 8 9 10 B 2310 2637 2183 1842 2569 2365 2724 2150 1898 2141 P 2325 2774 2208 1936 2613 2395 2859 2198 2083 2217

Explanation / Answer

Breast feeding sometimes results in a temporary loss of bone mass as calcium is

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