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a) Below are the numbers of deaths from tornados in the U.S. from 1990 through 2000.
53, 39, 39, 33, 69, 30, 25, 67, 130, 94, 40.
Calculate the median and mean.
b) Find the variance and standard deviation of the following numbers
2, 4, 6, 8, 10 .
According to the Sleep Foundation, the average night's sleep is 6.8 hours. Assume the standard deviation is 0.6 hours and the probability distribution is normal. a. What is the probability that a randomly selected person sleeps more than 8 hours?
on a multiple choice test with 11 questions each question has four possible answers one of which is correct. for
Determine which crew should be sent to each city to minimize the total distance traveled. How many miles will be traveled if these assignments are made?
What is the chance that the number who say "yes" in a properly drawn random sample of 500 will be smaller than 360?
For a random sample of 200 undergraduates he finds that 70 have some kind of allergy. What is the standard error of the sample proportions?
Is there a relationship between the opinion and the location of the resident at a level of significance of 0.05?
consider the set of odd single-digit integers 13579.a make a list of all samples of sixe 2 that can be drawn from this
1.incomes in a certain town are strongly-right skewed with mean 36000 and standard deviation 7000. a random sample of
Demonstrate your understanding of choosing the type of regression model to the given data, by explaning three factors that should be taken into account in the choice between different models.
Assuming that the heights of college women are normally distributed with mean 62 inches and standard deviation 3.5 inches, what percentage of women are between 58.5 inches and 72.5 inches?
Find the point estimate for the population proportion, the margin of error for a 95% confidence and then construct to the 95% confidence interval for the population proportion
Tthe hypothesis test used (normal curve, single sample t-test, dependent samples t-test, independent samples t-test, ANOVA). For situations 1, 3, 4, and 5, also state whether the test is unilateral or bilateral.
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