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1. For what kinds of tests can chi-square analysis be used?
2. Is the chi-square distribution a continuous distribution or a discrete distribution? Explain.
3. In what way are the chi-square and normal distributions related?
let x1 and x2 be observations of a random sample size of n2 from a distribution with p.m.f. fx x6 x123. then find the
Solve the inventory problem given in Prob. 19.7-6, but assume that the policy is to be used for only 1 year (a 12-period model). Shortages are backlogged each month, except that any shortages remaining at the end of the year are made up by purchas..
A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed a mean purchase of $5.29 with a standard deviation of $3.02 for the October 26 evening showing of the same movie
Why do we reject the null hypothesis when the p-value is small? Explain as if to someone unfamiliar with statistics. Why do we divide by the standard error when computing a test statistic?
What is the test value for this hypothesis test? Test value: Round your answer to three decimal places. What is the critical value? Critical value: Round your answer to three decimal places.
Consider the following two economic characteristics with two possible outcomes each: employment (increase, decrease) and economic trend (positive, negative).
suppose a simple random sample of size n49 is obtained from a population with u71 and o21.a describe the sampling
on average a textbook author makes two word processing errors per page on the first draft of her textbook. what is the
One-way analysis of variance is a method for comparing several population means, when the data are from independent samples. It a test that examines the relationship between a quantitative response variable and a categorical explanatory variable, ..
it is common in many industrial areas to use a filling machine to fill boxes full of product. this occurs in the food
Is the hot-air balloon significantly shorter than light rail? How can you tell? What do you tell university officials?
A sample of 46 bars is taken and their mean length is determined to be 51 centimeters with a standard deviation of 3.6 centimeters. Using a .01 significance level, test the retailers claim that the population mean is less than 50 centimeters.
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