1) A study was conducted to determine whether the mean braking distance of four-cylinder cars is greater than the mean braking distance of six-cylinder cars. A random sample of 20 four-cylinder cars and a random sample of 20 six-cylinder cars were obtained, and the braking distance was measured. What would be the appropriate hypothesis test for this analysis? i t test ii t test for dependent samples (matched pair) iii z test iv z test for dependent samples (matched pair) v Test for correlation vi Goodness of fit test vii Test for association (homogeneous data sets)
1) A study was conducted to determine whether the mean braking distance of four-cylinder cars is greater than the mean braking distance of six-cylinder cars. A random sample of 20 four-cylinder cars and a random sample of 20 six-cylinder cars were obtained, and the braking distance was measured. What would be the appropriate hypothesis test for this analysis?
i t test
ii t test for dependent samples (matched pair)
iii z test
iv z test for dependent samples (matched pair)
v Test for
vi Goodness of fit test
vii Test for association (homogeneous data sets)
2)
A study of 10 different weight loss programs involved 500 subjects. Each of the 10 programs had 50 subjects. The subjects were followed for 12 months. Weight change for each subject was recorded. The researcher wants to test the claim that all ten programs are equally effective in weight loss.
i t test
ii t test for dependent samples (matched pair)
iii ANOVA
iv Confidence interval evaluation
v Goodness of fit test
vi Test for association (Homogeneous data sets)
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