Lactation promotes a temporary loss of bone mass to provide adequate amounts of
ID: 3312018 • Letter: L
Question
Lactation promotes a temporary loss of bone mass to provide adequate amounts of calcium for milk production. A paper gave the following data on total body bone mineral content (TBBMC) (g) for a sample both during lactation (L) and in the postweaning period (P).
Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.)
Subject 1 2 3 4 5 6 7 8 9 10 L 1926 2545 2825 1921 1628 2175 2111 2621 1843 2545 P 2125 2885 2895 1944 1750 2181 2164 2626 2006 2628Explanation / Answer
Enter data in minitab
L P
1926 2125
2545 2885
2825 2895
1921 1944
1628 1750
2175 2181
2111 2164
2621 2626
1843 2006
2545 2628
stat>basic statistics>paired t>sample1(L),sample2(P)>options>95%,diffrrence<0
ok
output as below,
Paired T-Test and CI: L, P
Paired T for L - P
N Mean StDev SE Mean
L 10 2214 397 126
P 10 2320 406 128
Difference 10 -106.4 104.7 33.1
95% upper bound for mean difference: -45.7
T-Test of mean difference = 0 (vs < 0): T-Value = -3.21 P-Value = 0.005
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