Answered: Does this result support the…

Math

Statistics

Does this result support the researcher’s belief? Conduct an appropriate statistical test using an alpha level of .05.

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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4.27 please. I already had 4.26 answered. Thank you!
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A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 54 men and 70 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Two sample T for Men vs Women N Mean StDev SE Mean Men Women 98% CI for mu Men - mu Women (- 12.20, - 1.00) T-Test mu Men = mu Women (vs H2 O C. Ho: H1 = H2; Ha: H1 #H2 (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value =
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A coach believes that her volleyball team is more athletic than the average volleyball team in America. (Think of that as her research hypothesis.) We know that the average volleyball team in America has a score of 100 on the Standard Test for Athleticism (the STA; not to be confused with the SAT). The coach tests her 25 players and gets an average STA score for them of 109, with a standard deviation of 15. The coach sets her alpha level at .05. Given the results of her study, what decision should she make? Reject the null hypothesis, since she knows that her team plays so well. Reject the null hypothesis, since the mean is above 100 Reject the null hypothesis, since the inferential Z-score is greater than the critical value when alpha is at .05 Do not reject the null hypothesis; the results are likely due to chance factors.
The authors of a paper classified characters who were depicted smoking in movies released between a certain range of years. The smoking characters were classified according to sex and whether the character type was positive, negative, or neutral. The resulting data are summarized in the accompanying table. Assume that it is reasonable to consider this sample of smoking movie characters as representative of smoking movie characters. Do the data provide evidence an association between sex and character type for movie characters who smoke? Use α = 0.05. Sex = Male Female Positive Negative Neutral 256 Character Type 85 107 11 132 51 Calculate the test statistic. (Round your answer to two decimal places.) x² Use technology to calculate the P-value. (Round your answer to four decimal places.) P-value = What can you conclude? O Reject Ho. There is convincing evidence to conclude that there is an association between sex and character type for movie characters who smoke. Fail to reject Ho.…
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A college lacrosse coach wants to know if sending his players to a training camp will help them to score more goals. He knows that the population mean scoring per game for all college teams is 12.4 per game, with a standard deviation of 2.48. He takes a sample of 36 teams that have been to this training camp and he finds that they averaged 13.3 goals per game. Will participating in this training camp help his team score more goals? Use alpha .05 to answer this question.
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