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Comparing Flexibility A physical therapist believes that
Chapter 11, Problem 24AYU(choose chapter or problem)
Problem 24AYU
Problem
Comparing Flexibility A physical therapist believes that women are more flexible than men. She measures the flexibility of 31 randomly selected women and 45 randomly mselected men by determining the number of inches subjects could reach while sitting on the floor with their legs straight out and back perpendicular to the ground. The more flexible an individual is, the higher the measured flexibility will be. After entering the data into MINITAB, she obtained the following results:
Two Sample T-Test and Confidence Interval
(a) State the null and alternative hypotheses.
(b) Identify the P-value and state the researcher’s conclusion if the level of significance was α = 0.01.
(c) What is the 95% confidence interval for the mean difference in flexibility of men versus women? Interpret this interval.
Questions & Answers
QUESTION:
Problem 24AYU
Problem
Comparing Flexibility A physical therapist believes that women are more flexible than men. She measures the flexibility of 31 randomly selected women and 45 randomly mselected men by determining the number of inches subjects could reach while sitting on the floor with their legs straight out and back perpendicular to the ground. The more flexible an individual is, the higher the measured flexibility will be. After entering the data into MINITAB, she obtained the following results:
Two Sample T-Test and Confidence Interval
(a) State the null and alternative hypotheses.
(b) Identify the P-value and state the researcher’s conclusion if the level of significance was α = 0.01.
(c) What is the 95% confidence interval for the mean difference in flexibility of men versus women? Interpret this interval.
ANSWER:
Problem 24AYU
Answer:
Step1 of 1:
We have A physical therapist believes that women are more flexible than men. She measures the flexibility of 31 randomly selected women and 45 randomly m selected men by determining the number of inches subjects could reach while sitting on the floor with their legs straight out and back perpendicular to the ground. The more flexible an individual is, the higher the measured flexibility will be. After entering the data into MINITAB, she obtained the following results: