Question

The mean ± 1 sd of calcium intake (mg) namong 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean ± 1 sd of calcium intake (mg) among a separate group of 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76. What is the appropriate procedure to test for a significant difference in means between these two groups? Independant 2 sample t test ---- Implement the procedure identified in the previous question with α=0.05. Should we reject the null hypothesis? ---- Compute a 95% confidence interval for the difference in means between the two groups. Use the t-value for the closest smaller df to the calculated df. Report as follows: (#.##, #.##) ----- Compare and contrast the concepts of statistically significant and clinically meaningful results.

Answer 1

Page: o paye-2 O Date Date: The 95". Confidence interval too q the difference in means- between tx, 2id F= 2.002 groups do 57 = ((Xirda)-tx2: si? +5₂² < u, wal (71-X l ttage 33 +52 n2 nz 161 (16 16.56-6180)– 2:00 2 *0:1758 {elli-l2266.56-6.80 )+2.002 *0-1752 -(-0.24-0.3526 Tuli-12<-0.24 +0.3520) = (-0.5920 <ulia M2 < 0.112 )