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1) A major hurricane is a hurricane with wind speeds of 111 miles per hour or greater. During the 20th century, the mean number of major hurricanes to strike the U.S. mainland per year was about 0.7. Find the probability that in a given year a) exactly one major hurricane will strike the U.S. mainland, b) at most one major hurricane will strike the U.S. mainland, and c) more than one major hurricane will strike the U.S. mainland.
2) The mean number of days with 0.01 inch or more precipitation per month for Lewistown, Idaho, is about 8.7. Find the probability that in a given month a) there are exactly 9 days with 0.01 inch or more precipitation, b) there are at most 9 days with 0.01 inch or more precipitation, and c) there are more than 9 days with 0.01 inch or more precipitation.
What will be critical value of chi-square if test is to be performed at 0.025 level? At the 0.05 level?
Using classical methods discussed in class, try to estimate the probability of winning.
The analysis of covariance (ANCOVA) is generally useful for _______________
If one NBA player is selected at random, find the probability that this player is either 7 feet tall or weighs over 200 pounds.
Historically, 70% of your customers at Rodale Emporium pay for their purchases using credit cars. In a sample of 20 customers, find the probability that
Can you conclude that the information in the article is untrue? Use the 0.05 significance level. Determine the p-value and explain its meaning.
The researchers claimed that of those who completed the program, 85% improved. What possible confounds can you identify in this study?
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
If the restaurant stocks 400 hamburgers and 150 chicken sandwiches for a given day, what is the probability that it will run out of hamburgers or chicken sandwiches (or both) that day? Assume that the demand for hamburgers and the demand for chick..
A sample of n=20 has a mean of M=40. If the standard deviation is s=5, would a score of x=55 be considered an extreme value?
Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
What is the relationship between the sign of the correlation coefficient and the sign of the slope of the regression line?
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