Question: A researcher randomly divided 110 men into two groups. For 6 weeks, the control group ate normally and the experimental group followed a low-fat diet.
A researcher randomly divided 110 men into two groups. For 6 weeks, the control group ate normally and the experimental group followed a low-fat diet. At the end of the 6-week period, the weights of all of the men were recorded. Asampleof the group is depicted here. Determine which type of t-test to conduct. Record ALL answers to the nearest tenth;failure to do so will result in an incorrect answer.
HINT: Include mean, SD, SED, t-ratio, TCV@ a=0.05,
CONTROL WEIGHT (lbs)164,176,155,169,181,163,173,167,175,147
EXPERIMENTAL WT (lbs)161, 150,186,148, 144,167, 158, 147,132,146
A.)(2points)What is the mean for each group?
B.)(2points)What is the SD for each group?
C.) (1point)Calculate the SED for this comparison.
D.) (1point) What type of study was conducted? (Historical or Experimental or Observational and Longitudinal or Crossover)
E.) (1 point) What type of test will you conduct? Be as specific as possible.
F.) (2 points) Define the dependent and independent variables.
G.)(2points)What is the calculated t-ratio?
H.) (1 point) What it the t-critical value for a two-tailed test, with an alpha of 0.05?
I.)(1point)Is the group comparison significant?
J. ) (2 points) What is the conclusion of the test (be as specific as possible in terms of the null and alternative hypothesis and group comparison) Is the p-value < or > 0.05 and if significant, what are the group differences?
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