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Find the critical value for a right-tailed F-test when alpha=.05 the degrees of freedom for the numerator (d.f.N.) are 15, and the degrees of freedom for the denominator (d.f.N.) are 21.
Find the critical value for a two tailed F-test with alpha=.05 when the sample size from which the variance for the numerator was obtained was 21 and the sample size from which the variance for the denominator was obtained 12
A rental agent claims that the mean monthly rent, , for apartments on the east side of town is less than $675 . A random sample of 18 monthly rents for apartments on the east side has a mean of $661, with a standard deviation of $24.
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length:
Why is the F distribution important? How do you determine if a significant difference exists among the groups in ANOVA? How do you determine differences between the groups in ANOVA?
A scatter plot and regression line can be used for all of the following EXCEPT
Ace Jack had no idea whether the $100,000 he pays for training for his used car salespeople works.
Under older Federal Aviation Administration rules, airlines had to estimate the weight of a passenger as 185 pounds. That amount is for an adult traveling in winter, and it includes 20 pounds of carry-on baggage.
What is the probability that more than 200 cars will require service work in a particular month?
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
The lifetime (hours) of an electronic device is a random variable with the exponential probability density function:
A sample of 144 cans of coffee showed an average weight of 16 ounces. The standard deviation of the population is known to be 1.4 ounces.
The probability that an individual is left-handed is 0.1. In a class of 30 students, what is the probability of finding at least five left-handers?
Jared bets on the number 7 for each of 100 spins of a roulette wheel. Because P(7) = 1/38 he expects to win two or three times. What is the probability that Jared will actually win two or more times?
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