A researcher wants to know whether athletic men are more flexible than nonathletic men. For thisexperiment, a man who exercised vigorously at least four times per week was considered "athletic." Flexibilityis measured in inches on a sit & reach-box. Test the researcher's claim using the following summary statistics(use 5% level of significance):Nonathletic Menh = 40x = 3.2 inchess = 1.0 inchesAthletic Menn = 50x = 4.3 inchess = 2.1 inchesAssume that all conditions for testing have been met. Be sure to report the null and alternative hypotheses,test statistic, p-value, your decision regarding the null hypothesis, and your conclusion about the originalclaim. Round all values to the nearest thousandth.(a) Provide detailed calculations; use technology to calculate required percentiles.(b) Verify your results using technology (provide the output).

The given sample size for athletic men is 50, sample mean is 4.3, sample standard deviation is 2.1,…

Answered: A researcher wants to know whether…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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When testing Ho: p = .30 vs Ha: p > .30, the data shows 17 successes out of 50 trials. Compute the test statistic.
A researcher wants to know if athletic women are more flexible than non-athletic women. For this experiment, a woman who exercised vigorously at least four times a week was considered "athletic." Flexibility is measured in inches on a sit-and-reach box. One researcher tested his claim using the following summary statistics: Assume that all the conditions for the test have been met. t = 1.626; p = 0.057; At the 1% level of significance, indicate your decision regarding the null hypothesis and your conclusion on the original statement.
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ot yet answered A chart that displays the probability of acceptance versus percentage of defective items (or lots). none of the above O a. O b. Fisher's least significance difference (LSD) O c. Multiple comparisons method O d. Operating characteristics (OC) curves
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Samples of body temperatures were taken from both men and women. The information from the samples is summarized below. Use a 0.05 significance level to to test the claim that men and women have different mean body temperatures. Men: n₁ = 15; 1 = 98.38° F; s₁ = 0.45°F Women: n2=91; 2 = 98.17°F; $2 = 0.65° F a. On your Work Upload or Calculations page, write down your hypotheses. Label which hypothesis is the claim. b. The test statistic is c. The critical value is . (Round to 3 decimal places.) (Round to 3 decimal places.) d. The p-value is (Round to 3 decimal places.) e. On your Work Upload or Calculations page, show how you made your decision using either the traditional or p-value method. The correct decision is to 1: Reject the null hypothesis, or 2: Fail to reject the null hypothesis. box.) (Type 1 or 2 in the f. On your Work Upload or Calculations page, write your conclusion/results summary. (Use the standard language about evidence and support of claims.)
An arborist is interested in determining the mean diameter (in centimeters) of mature white oak trees at a certain height above the base. She measures 7 of these trees and finds the following sample statistics: F = 49.09 and s = interval for the mean diameter of a mature white oak tree. 13.80. Construct a 95% confidence
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The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.

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