ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake (mg)] among 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76. a. Test for a significant difference between the variances of the two groups. b. What is the appropriate procedure to test for a significant difference in means between the two groups? c. Implement the procedure in (b) using the critical-value method. d. What is the p-value corresponding to your answer in (c)? e. Compute a 95% CI for the difference in means between the two groups.
ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake (mg)] among 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76. a. Test for a significant difference between the variances of the two groups. b. What is the appropriate procedure to test for a significant difference in means between the two groups? c. Implement the procedure in (b) using the critical-value method. d. What is the p-value corresponding to your answer in (c)? e. Compute a 95% CI for the difference in means between the two groups.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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1. ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake (mg)] among 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76.
a. Test for a significant difference between the variances of the two groups.
b. What is the appropriate procedure to test for a significant difference in means between the two groups?
c. Implement the procedure in (b) using the critical-value method.
d. What is the p-value corresponding to your answer in (c)?
e. Compute a 95% CI for the difference in means between the two groups.
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