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Question: A sample of 18 observations selected from a normally distributed population produced a sample variance of 4.6.
a. Write the null and alternative hypotheses to test whether the population variance is different from 2.2.
b. Using α = .05, find the critical values of χ2. Show the rejection and nonrejection regions on a chi-square distribution curve.
c. Find the value of the test statistic χ2.
d. Using the 5% significance level, will you reject the null hypothesis stated in part a?
Using the standard normal distribution tables, what is the area under the standard normal curve corresponding to Z
Assuming the nurses surveyed were a simple random sample from the population of all nurses in the United States, find the appropriate null hypothesis for these data
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when one experiences a lack of control in ones life does one compensate by seeking structure elsewhere? assign 36
The amount of growth during a set 15-day period for a population of sunflower plants follows a normal distribution with μ=3.07 cm and σ=0.40 cm.
Suppose each client has a 1% chance of achieving perfect attendance during any given year, independent of any other client. Determine the maximum value of q such that there is a less than 1% chance that the $1,000 fund will be inadequate to cover ..
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consider a regression model where y is explained by two regressors x1 and x2 i.e. a regression of the form yi x1ibeta1
Do the test results tend to support the manager's suspicion that adverse conditions might be detrimental to the operating lifespan of halogen lightbulbs used in her plant?
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