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Propranolol is the beta blocker given to ease pain of patients with episodes of unstable angina. New drug for treatment of this disease is tested on 30 pairs of patients who are matched on one-to-one basis according to age, sex, and clinical condition and are assessed as to severity of their pain. Assume that in 15 pairs of patients, patient with new drug has less pain; and in l0 pairs of patients, patient with propranolol has less pain; and in 5 pairs of patients, pain is about same with two drugs.
Assume normality is not assumed. What nonparameiric test can be used to distinguish total heart weight of males with left-heart disease with that of normal males? Write and Implement test and report a p-value.
The remaining 5 were not given the overview. Here are the scores for students in each group:
Based on these results, is there significant difference between attitudes for males and for females? Use two tailed test with alpha = .05.
Under what conditions should you use the Chi-Square Test to determine whether there is a difference between proportions of two independent populations?
Failure times for a randomly failing component are 3.3, 14.3, 27.1, 41.3, and 92.2 hours. Find the MTTF and standard deviation using: a) moment estimation. b) maximum likelihood estimation.
You are looking at a bond to add in your portfolio. The bond has a 7.2 percent coupon (paid semiannually), 10 years left to maturity, and can be purchased at par ($1,000).
They estimated the proportion of students at the university who prefer outdoor exercise as (0.5745, 0.8217), with 95% confidence. Which of the following is an appropriate interpretation of this confidence interval?
Book inventory Record information - Ratio, interval, nominal or ordinal.
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Build a 95 percent confidence interval for mu, population mean.
If she has chosen the first weeks rides, how many ways can she choose four more different rides for the second week? Assume that order does not matter.
Given that the mean of 100 observations is 42.5 and that their standard deviation is 6.313, find the sum of the squares of the observations.
Determine the minimum sample size to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 1.2 years.
Determine the conditions under which you would use a discrete probability distribution rather than a continuous probability distribution. Provide one (1) example to illustrate your reasoning.
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