In how many ways can 10 athletes be awarded a first-place medal, a second-place medal, and a third-place medal?

answer is

10P3 = 10 x 9 x 8 = 720.

Triangle EFG is dilated by a scale factor of \frac{2}{3}
3
2
​
to form triangle E'F'G'. What is the measure of side E'F'?

Average heart rate for Americans is 72 beats/minute. A group of 25 individuals participated in an aerobics fitness program to lower their heart rate. After six months the group was evaluated to identify is the program had significantly slowed their heart. The mean heart rate for the group was 69 beats/minute with a standard deviation of 6.5. Was the aerobics program effective in lowering heart rate? Use a significance level of alpha = 0.01

With the use/abuse of alcohol, the heart is more efficient in the use of nutrients by the heart tissue.

true or false​

A research team wants to investigate the usefulness of relaxation training for reducing levels of anxiety in individuals experiencing stress. They identify 30 people at random from a group of 100 who have "high stress" jobs. The 30 people are divided into two groups. One group acts as the control group - they receive no training. The second group of 15 receive the relaxation training. The subjects in each group are then given an anxiety inventory. The summarized results appear below where higher scores indicate greater anxiety. Use a significance level of alpha = 0.025

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