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How does the ANOVA technique avoid the problem of the inflated probability of making Type I error that would arise using the alternative method of comparing groups two at a time using the t-test for independent groups?
suppose two dice are rolled. let x be the random variable measuring the sum of the two numbers rolled.a find the
Give an example of when the F-statistic would be a useful value in data analysis. Provide details of what you would measure and how the F-statistic would be used.
The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch wili be rejected?
heights of men on a basketball team have a bell shaped distribution with a mean of 173cm and a standard deviation of
Although the packet claims a germination rate of 92%, only 171 or 200 test seeds sprout. Is this evidence that the seeds have lost viability during a year in storage?
Standard deviation of 19.5. Use a 0.05 significance level to test the claim that the sample comes from a population with a standard deviation less than 23.4.
a random sample of mens soccer shoes from an international catalog had the following weights in ounces10.8 9.8 8.8 9.6
Do they have the same probability
Using the 0.05 significance level what should we conclude about the theory that 24hrs. is a natural cycle? a) use hypothesis steps b) sketch distribution c) explain to someone who never took this course.
A medical researcher estimates that no more than 55% of the U.S. adults eat breakfast every day. In a random sample of 250 U.S. adults, 56.4% say that they eat breakfast every day.
In a regression analysis involving 27 observations, the following estimated regression equation was developed.
Imagine you are the CEO of a local bank whose credit card holders engage in 1 billion credit card transactions per year; that the likelihood of a fraudulent transaction is 2%
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