Mathematics, 07.12.2021 22:00, littlebirdd987
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, 21.06.2019 15:40, tylorroundy
Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population, find the population standard deviation, o.79828588912497
Answers: 3
Mathematics, 21.06.2019 20:00, carltonwashington23
The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square
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Mathematics, 21.06.2019 20:00, 4804397217
A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?
Answers: 2
Mathematics, 21.06.2019 21:40, chunkymonkey090
Ihonestly have no clue if it's each or none.
Answers: 1
In a study of heart surgery, one issue was the effect of drugs called beta-blockers on the pulse rat...
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