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Physicians at a clinic gave what they thought were drugs to 920 asthma, ulcer, and herpes patients. Although the doctors later learned that the drugs were really placebos, 52 % of the patients reported an improved condition. Assume that if the placebo is ineffective, the probability of a patients condition improving is 0.48. For the hypotheses that the proportion who improve is 0.48 against that it is greater than 0.48, find the P-value.
P-value =
Can we conclude there is a difference in mean number of surgeries performed by hospital or by day of week?
Which measure of central tendency would you use to summarize the data below? Which inferential test would you use to determine if there is a difference in rainfall between the sample 2 and 3?
The difference in mountain elevation of 26,200 feet and 1,100 feet below the surface of the ground. I am thinking +26,200 feet minus -1100 feet
Assume that waiting times are approximately normally distributed. Construct a 98% confidence interval for the population mean of waiting times.
a pew internet and american life project 2007 report stated that 74 of teenage boys posted their photo on their online
the following data lists the avarage monthly snowfall for january in 15 cities around the us13 31 15 3 26 47 24 21 44
Pools sells above ground model for 'p' dollars each. The monthly revenue from the sale of the pool is given by
Find the expected frequency to test the claim that walking and low, moderate, and high blood pressure are not related. Round to the nearest tenth if necessary.
peter paul mary john and martha are members of the pastoral council at a local church. they are to be seated at one
why the rise in performance on IQ tests contrasts with a steady decline in performance over the past decades on many standardized tests,
Specify the appropriate null and alternative hypotheses if we wish to test the research hypothesis that the mean GHQ score for all employed men exceeds 10.
Determine Hernandez's optimal shipping quantities so as to minimize total transportation costs.
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