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Suppose major earthquakes happen at the rate of 2 per year.
(a) If we know there has been no major earthquakes in the past 6 months, what is the probability that there will be no major earthquakes within the next 6 months.
(b) What is the probability that 5 major earthquakes happen during the next two years.
Explain these results to a person who has never had a course in statistics - An experiment is conducted in which 60 participants each fill out a personality test,
suppose a study estimated the population mean for a variable of interest using a 99 confidence interval. if the width
Is there evidence that a clear majority of the population will vote for the Democratic candidate? To answer this, they will test the hypotheses H0: p = 0.50 versus Ha: p > 0.50. If n = 1200 and X = 640, what is the P-value for this hypothesis test..
the following problem should be answered in rgenerate 50 normal distributions with mean 15 and standard deviation 3
What should the cut-off score be for the interviews? (Round to nearest whole number).
Suppose we have a controllable predictor X that takes four different values, and we measure a binary-valued response YA random sample of 100 was taken.
1 a sample of 100 elements produced a mean of 48 and a standard deviation of 8. the 99 confidence interval for the
a multiple-choice test contains n questions. if answers are randomly selected the correct answer will be selected with
Find the distribution of the test statistic when the null hypothesis is true, and then show how to get a test size alpha= 0.10
Use this model and the formula for Sn to find the total cost of tuition and fees at public colleges for a four-year period from the school year ending in 2007 through the school year ending in 2010.
question 1 suppose you own a campsite in chamarel and you wish to increase the site in order to increase your profits.
A machine for making precision cuts in dimension lumber produces studs with lengths that vary with standard deviation 0.003 inch.
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