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The number of hurricanes that are formed during each hurricane season can be modeled using the Poisson probability distribution. History suggests that the average number of hurricanes formed during a year is 6.0 hurricanes. Find the probability of at most three hurricanes being formed during a randomly selected year.
a) .062
b) .151
c) .285
d) .938
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
The owner of a small computer store personally sells one computer per week on the average. Use the Poisson distribution to find the probability of randomly selecting a week in which she personally sold three computers.
What is the expected shape of the distribution of the sample mean?
Test the hypothesis that the annual incomes of Teachers in areas of more than 500,000 are significantly more than those in areas of less than 100,000. Use the 5% level of risk.
Roll a die and record the count of spots on the up face: P(1) = 0, P(2) = 1/6, P(3) = 1/3, P(4) = 1/3, P(5) = 1/6, P(6) = 0.
What linear transformation will change sixth grade scores x into new scores xnew= a+bx that have the desired mean and standard deviation?
State a question that can be answered in a "binomial" manner, such as Do you normally read the front page of a newspaper at least 4 times a week?
Computing the mean and standard deviation for the given data - Find the value for the new standard deviation
The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September 2006.
Conduct the hypothesis test and provide the test statistic, critical value and/or P- value and state the conclusion.
What is your initial perception of this information? What are other ways, beyond looking at the p-value alone, you could use to try to interpret what this outcome of r(2398) = -.21 tells us about the relationship between length of time taking drug..
Suppose that n trials of a binomial experiment result in no successes.
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