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If the alpha level is changed from a = .05 to a = .01,
a. What happens to the boundaries for the critical regions?
b. What happens to the probability of a type I error?
A recent survey by alumni of a major university indicated that average salary of 8000 of its 250,000 graduates was $120,000. Does this signify population parameter or sample statistic?
What are the two ways of testing a correlation coefficient for significance?
One of the most important uses of a correlation is its potential use in_________
Micron Electronics makes both desktop and laptop personal computers that they sell directly to customers by phone or over the Internet.
A large population of metal rods have an average diameter of .943 inches with a standard deviation of .001 inches. The engineering specification for the rods requires that they be between .941 and .944 inches.
A study group of long distance phone calls made from the corporate offices of Pepsi Bottling Group, Inc., in Somers, New York, revealed the length of the calls, in minutes, follows normal probability distribution.
Perform the five-step hypothesis test on the data. - LORA - this is the portion I am responsible for based on using the nonparametric hypothesis testing.
Research question : At α = . 05, is cockpit noise level independent of flight phase?
Based on our poll what is the margin of error of the proportion of voters favoring the incumbent?
If np ≥ 5 and nq ≥ 5, estimate P (more than 5) with n=14 and p=0.3 by using the normal distribution as an approximation to the binomial distribution; if np
In terms of p , the researcher should test which of the following null and alternative hypotheses?
what is the post-test probability of disease being present in a patient with a positive test result for test A if a cutoff value of 4.0 mg/ml is chosen?
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