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1. Suppose that for a given population with σ = 7.2 we want to test H0:μ = 80 against H1:μ < 80="" based="" on="" a="" sample="" of="" n="">
(a) If the null hypothesis is rejected when ¯y < 76,="" what="" is="" the="" probability="" of="" a="" type="" i="">
(b) What would be the rejection region if we wanted to have a level of significance of exactly 0.05?
2. An experiment designed to estimate the mean reaction time of a certain chemical process has ¯y = 79.6 s, based on 144 observations. The standard deviation is σ = 8.
(a) What is the maximum error of estimate at 0.95 confidences?
(b) Construct a 0.95 confidence interval on μ.
(c) How large a sample must be taken so that the 0.95 maximum error of estimate is 1 s or less?
what is a x2 test and what type of data would we use with it to test a hypothesis? what is an example of a variable for
Jennifer decided to have a barbecue. She invited John over and offered him a piece of wild boar. Unfortunately, the boar was not cooked all the way through.
This problem belongs to Basic Statistics and it discusses about preparing univariate and multivariate tests for measuring cholesterol among two groups
In a study of a proposed treatment for diabetes prevention, 339 people under the age of 20 who were thought to be at high risk
assume that a radiologist group practice has the following cost structurefixed costsnbspnbspnbspnbsp
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Medicine and Clinical Studies A random sample of patients with a certain kidney disorder was obtained, and the renal blood-flow rate was measured
the verbal part of the graduate record exam has a mean ? of 500 and a standard deviation ? of 100. use the normal
For a random sample of 36 items and a sample mean of 211, compute a 95% confidence interval for µ if the population standard deviation is 23.
Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced.
Suppose that the population standard deviations are known to be six and three, respectively. Conduct a hypothesis test to evaluate the manufacturers claim.
Test the relevant hypotheses using a 5 .05. For purposes of this exercise, assume that it is reasonable to regard the sample
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