Nutrition The mean ±1 sd of 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. 8.2 Test for a significant difference between the variances of the two groups. 8.3 What is the appropriate procedure to test for a signifi- cant difference in means between the two groups?

Nutrition The mean ±1 sd of 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. 8.2 Test for a significant difference between the variances of the two groups. 8.3 What is the appropriate procedure to test for a signifi- cant 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

Section10.4: Distributions Of Data

Problem 7PPS

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NutritionThe mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.2 Test for a significant difference between the variancesof the two groups.8.3 What is the appropriate procedure to test for a significant difference in means between the two groups?8.4 Implement the procedure in Problem 8.3 using thecritical-value method.8.5 What is the p-value corresponding to your answer toProblem 8.4?8.6 Compute a 95% CI for the difference in meansbetween the two groups
NutritionThe mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76. 8.2 Test for a significant difference between the variancesof the two groups. 8.3 What is the appropriate procedure to test for a signifi-cant difference in means between the two groups? 8.4 Implement the procedure in Problem 8.3 using thecritical-value method.8.5 What is the p-value corresponding to your answer toProblem 8.4?8.6 Compute a 95% CI for the difference in meansbetween the two groups. Please solve the 8.4,8.5,and 8.6 clarify the answers and give notes on them
The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.2 Test for a significant difference between the variancesof the two groups.8.3 What is the appropriate procedure to test for a significant difference in means between the two groups?8.4 Implement the procedure in Problem 8.3 using thecritical-value method.8.5 What is the p-value corresponding to your answer toProblem 8.4?8.6 Compute a 95% CI forThe mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.6 Compute a 95% CI for the difference in meansbetween the two groups.
The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.2 Test for a significant difference between the variancesof the two groups.8.3 What is the appropriate procedure to test for a significantdifference in means between the two groups?8.4 Implement the procedure in Problem 8.3 using thecritical-value method.8.5 What is the p-value corresponding to your answer toProblem 8.4?8.6 Compute a 95% CI for the difference in meansbetween the two groups.
The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76. 8.2) Test for a significant difference between the variancesof the two groups.8.3)What is the appropriate procedure to test for a significant difference in means between the two groups?8.4) Implement the procedure in Problem 8.3 using thecritical-value method.8.5)What is the p-value corresponding to your answer toProblem 8.4?8.6 )Compute a 95% CI for the difference in meansbetween the two groups.8.7 )Suppose an equal number of 12- to 14-year-old girlsbelow and above the poverty level are recruited to studydifferences in calcium intake. How many girls should berecruited to have an 80% chance of detecting a significantdifference using a two-sided test with α = .05?8.8) Answer Problem 8.7 if a one-sided rather than a twosided test is…
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Avalanches can be a real problem for travelers in the western United States and Canada. Slab avalanches studied in Canada had an average thickness of u = 67 cm. A sample of 31 avalanches in the U.S. gave a sample mean of = 63.0 cm. It is known that o = 10.3 cm for this type of data. Use a 0.03 level of significance to test the claim that the mean slab thickness of avalanches in the United States is different from that in Canada. Use the P-Value Approach. What is the P-Value for this problem? O 0.0154 0.0150 0.0300 0.0308