Mathematics, 07.12.2021 22:10, tonio638
In a study of heart surgery, one issue was the effect of drugs called beta-blockers on the pulse rate of patients during surgery. The available subjects were divided at random into two groups of 30 patients each. One group received a beta-blocker; the other group received a placebo. The pulse rate of each patient at a critical point during the operation was recorded. The treatment group had a mean pulse rate of 65.2 and standard deviation 7.8. For the control group, the mean pulse rate was 70.3 and the standard deviation was 8.3. What is the probability that the difference in the samples (treatment group – placebo group) is greater than 0?
Answers: 2
Mathematics, 20.06.2019 18:04, tamya12234
Ascale drawing of a lake has a scale of 1 cm to 80 m. if the actual width of the lake is 1000 m what is the width of the lake on the scale drawing
Answers: 3
Mathematics, 21.06.2019 20:30, psychocatgirl1
Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.
Answers: 3
In a study of heart surgery, one issue was the effect of drugs called beta-blockers on the pulse rat...
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