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Question: In a comparative study of two new drugs, A and B, 120 patients were treated with drug A and 150 patients with drug B, and the following results were obtained. Drug A Drug BCured 50 88Not Cured 70 62Total 120 150
a) Do the results demonstrate a significantly higher cure rate with Drug B than Drug A? Test at 5% significance level.
b) Construct a 95% confidence interval (CI) for the difference in the cure rates of the two drugs.
What is the average of these five amounts?
Just as the difference rule gives rise to a formula for the probability of the complement of an event, so the addition and inclusion/exclusion rules give rise to formulas for the probability of the union of mutually disjoint events and for a gener..
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One resident of this community has an old, working refrigerator whose food-storage compartment has the following dimensions: 44 inches from top to bottom, 24 inches from left to right, and 17 inches from front to back. Does the food-storage capaci..
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In a current election campaign, PSI has just found that 220 registered voters, out of 500 contacted, favor a particular candidate.
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the mean is 70 and the standard deviation is 5.in the third class, the mean is 72 and the standard deviation is 4. in which class are the grades most dispersed.
Given a message and an integer n = pq where p and q are odd primes and an integer e > 1 relatively prime to (p - 1)(q - 1), encrypt the message using the RSA cryptosystem with key (n, e).
Drive Wheels of an Engine TIle drive wheel of an engine is 13 inches in diameter, and the pulley on the rotary pump is 5 inches in diameter. If the shafts of the drive wheel and the pulley are 2 feet apart, what length of belt is required to join ..
Let A be a matrix of size m × n and let B be a matrix of size k × l .
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