Exercise 29

Topics: Statistical hypothesis testing, Statistical significance, Null hypothesis Pages: 2 (790 words) Published: March 21, 2013
9Name: Brielle Cantagallo Class: Statistics
Date: 3/17/13
□ EXERCISE 29 Questions to be Graded
* 1.Were the groups in this study independent or dependent? Provide a rationale for your answer. The groups in this study were independent because the two sets of data were not taken from the same subjects. The subjects were in one group: female and the second group: male. * 2.t = −3.15 describes the difference between women and men for what variable in this study? Is this value significant? Provide a rationale for your answer. t= -3.15 describes the difference between men and women for the variable of mental health. This value is significant because 0.002 is less than the alpha type 1 error rate of 0.05 that was used. * 3.Is t = −1.99 significant? Provide a rationale for your answer. Discuss the meaning of this result in this study. t= -1.99 is significant because it shows that the physical functioning and health functioning of both the men and women in this study were almost the same across the board. The p value of 0.049 was also the same in each of these variables concluding that the type 1 error rate for this was less than the alpha 0.05 that was set for this study. * 4.Examine the t ratios in Table VI. Which t ratio indicates the largest difference between the males and females post MI in this study? Is this t ratio significant? Provide a rationale for your answer. The t ratio that was the largest difference between males and females post MI in this study was mental health with -3.15.This t ratio is significant because it shows that the mental health of the women versus the men in this study was the largest difference. * 5.Consider t = −2.50 and t = −2.54. Which t ratio has the smaller p value? Provide a rationale for your answer. What does this result mean? T ratio -2.54 had the smaller p value of 0.007.-2.50 had a p value of 0.01.This result means that because the 0.007 p value is less than the predetermined alpha which was 0.05 that the...
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