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Fifty-three percent of all persons in the u.s. population have at least some college education. choose 10 persons at random. Find the probability that at least 5 do not have any college education.
Find the probability that in a given year,a) Exactly one major hurricane will strike the U.S. mainland
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
The current advertising campaign for a major automobile brand would be changed if fewer than 70 percent of the consumers like it.
A researcher conducts some research in which they identify a significant positive correlation (r =0.42) between the number of children a person has and their life satisfaction. Which of the following is it inappropriate to conclude from this resea..
When 6 telephones are received, all of them are free of defects. What is the written description of the complement of the above event?
10 people taste wine A and wine B, X= denote the number prefer A. Assume that all others prefer B. These people random sample..
Determine the event that the sum of the numbers falling uppermost is less than or equal to 7
A survey of 1,233 visitors to Mumbai last year revealed that 110 visited a small cafe during their visit. Laura claims that 10% of tourists will include a visit to a cafe.
he standard deviation of the sample proprortion is 5.3%. How large a sample (to the nearest person) would be required to reduce this standard deviation to 3.7%?
What is the role of theory in research proposals? What are the elements of a study plan? Where might a beginning researcher lose logical flow among elements in a study plan? Why might that happen?
The data follow. Males Females 27 25 25 29 19 18 10 23 16 20 22 15 14 19 (a) What statistical test should be used to analyze these data?
The standard screening test for Down's syndrome is based on a combination of maternal age and the level of serum alpha fetoprotein. Using the test 80% of Down's syndrome cases can be identified while 5% of normals are detected as positives.
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