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Question 1: What is the difference between the chi-square test for goodness-of-fit and the chi-square test for independence? The chi-square test for goodness-of-fit is a nonparametric hypothesis test used with one nominal variable. The chi-square test for independence is a nonparametric test used with two nominal variables.
Question 2: What are the hypotheses when conducting the chi-square test for goodness-of-fit?
An airline has surveyed a simple random sample of air travelers to find out whether they would be interested in paying a higher fare in order to have access to e-mail during their flight.
Using the spreadsheet for exercises 1-3, estimate how the population will change from this generation to the next under each of the following conditions.
One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.
What are the singleton subsets of X and Y? are the empty set and the sample space the singleton subsets?
A large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Holiday Inn.
the data set toxemia contains information for a sample of 100 infants born in two hospitals in boston. indicators of a
A random sample of 95 printers discovered that 20 of them were being used in small businesses. Find the 95% limit for the population proportion of printers that are used in small businesses.
Suppose you went to the Bureau of Labor Statistics web site and found several predictors of your salary. State three possible predictors and a simulated multilinear regression equation along with their p-values. What does your p-values tell you ab..
Identify the scale of measurement in each of the following:
How should he go about taking samples to gather data for testing the hypotheses?
Some television stations attempt to gauge public opinions by posing a question on the air and asking viewers to call to give their opinions.
The design tolerance thickness for an automotive part is 55 mm to 65 mm. If the process mean thickness is 61 with a standard deviation of 2.3 mm, then what percentage of the sheets will be acceptable? (i.e. What percentage will fall within the des..
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