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Test whether the two variance are equal at 5% level of significance:
For the samples summarized below, test the hypothesis at ∞ =.05 that the two variances are equal. Variance Number of data values Sample 1 19 8 Sample 2 9 18
a. Reject the hypothesis because the test value 2.11 is less than the critical value 3.16.
b. Reject the hypothesis because the test value 4.46 is greater than the critical value 3.01.
c. Do not reject the hypothesis because the test value 2.11 is less than the critical value 3.16.
d. Do not reject the hypothesis because the critical value 3.01 is greater than the test value 4.46.
The following estimated regression model was developed relating yearly income (Y in $1,000s) of 30 individuals with their age (X 1 ) and their gender (X 2 ) (0 if male and 1 if female).
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
If you draw one ball from the urn what is the probability that it is blue or white?
In how many different ways can 5 songs be arranged if a particular song must be the first on the EP?
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The incubation time for Rhode Island Red chicks is normally distributed with a mean of 21 days and standard deviation of approximately 1 day.
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
Create a hypothesis and perform a series of tests to determine if there is any fundamental difference in the findings.
How much variability will you have if you predict sales with this model?
A company wants to know if minorities are more likely to be in certain job categories than others. Their data base codes employees 1 for clerical, 2 for custodial, and 3 for manager. A logistic equation was fit to the data with SPSS.
What is the appropriate conclusion based on the outcome of the hypothesis test?
Verify that this is valid density function. Find out probability that weight is smaller than 24 ounces.
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