Homework Help is Here – Start Your Trial Now!
Math
Statistics
A researcher investigated the lateral range of motion (in degrees) for workers with and istory of lower back pain (LBP). The summary statistics are given in the following Sample Sample Sample Мean 91.5 88.3 Std. Dev. 5.5 Condition Size 13 No LBP LBP 17 7.8 Iculate a 95% confidence interval to estimate the difference between the true mean ent of lateral range of motion for the populations of people with the two conditions. ssume the underlying populations are normal with equal variances.) pose that the researcher wanted to test whether or not the means were equal (using a .05). She would want to test H, : 4, - H, = 0 versus H:4-4, #0. Using the fidence interval in part (a), what would be the decision (Reject Ho or Do not reject

A researcher investigated the lateral range of motion (in degrees) for workers with and istory of lower back pain (LBP). The summary statistics are given in the following Sample Sample Sample Мean 91.5 88.3 Std. Dev. 5.5 Condition Size 13 No LBP LBP 17 7.8 Iculate a 95% confidence interval to estimate the difference between the true mean ent of lateral range of motion for the populations of people with the two conditions. ssume the underlying populations are normal with equal variances.) pose that the researcher wanted to test whether or not the means were equal (using a .05). She would want to test H, : 4, - H, = 0 versus H:4-4, #0. Using the fidence interval in part (a), what would be the decision (Reject Ho or Do not reject

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 25SGR
See similar textbooks
icon
Related questions
Question
A researcher investigated the lateral range of motion (in degrees) for workers with and without a history of lower back pain (LBP). The summary statistics are given in the following table. Sample Sample Sample Size 13 17 Mean 91.5 Std. Dev. 5.5 Condition No LBP LBP 88.3 7.8 (a) Calculate a 95% confidence interval to estimate the difference between the true mean extent of lateral range of motion for the populations of people with the two conditions. (Assume the underlying populations are normal with equal variances.) (b) Suppose that the researcher wanted to test whether or not the means were equal (using a = 0.05). She would want to test H : µ, - µ, = 0 versus H: 4 - µ, # 0. Using the confidence interval in part (a), what would be the decision (Reject H, or Do not reject H, )? Explain.
Transcribed Image Text:A researcher investigated the lateral range of motion (in degrees) for workers with and without a history of lower back pain (LBP). The summary statistics are given in the following table. Sample Sample Sample Size 13 17 Mean 91.5 Std. Dev. 5.5 Condition No LBP LBP 88.3 7.8 (a) Calculate a 95% confidence interval to estimate the difference between the true mean extent of lateral range of motion for the populations of people with the two conditions. (Assume the underlying populations are normal with equal variances.) (b) Suppose that the researcher wanted to test whether or not the means were equal (using a = 0.05). She would want to test H : µ, - µ, = 0 versus H: 4 - µ, # 0. Using the confidence interval in part (a), what would be the decision (Reject H, or Do not reject H, )? Explain.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
SEE MORE TEXTBOOKS