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Conduct a two tailed hypothesis test given the information below.Assuming that the population standard deviations are unknown but equal for male and female GPA, use the following sample data to test whether the GPA are different at the 0.05 level of significance.
Male GPA Sample size 13 Sample mean 3.6 Sample standard dev 0.4 Female GPA Sample size 16 Sample Mean 3.8 Sample standard dev 0.7
Interpret coefficient on log (salesm). If salesm were to be increased by 20%, what would be estimated change in mktgp? Would this effect be substantive?
Findout the normal model for the given proportions. The professor has every student toss a coin 50 times also calculated the proportion
According to a recent survey, 275 of 400 middle-aged Americans said they used the Internet regularly. 140 of 400 senior citizens said they used the Internet regularly.
Find out the probability that a student from the whole school system, chosen at random, has passed?
It is impossible to obtain a standard error less than 2 for any sized sample.
What is the probability of finding 1 or more children with chronic bronchitis in a population where the incidence rate of chronic bronchitis is 10% (like the one above?)
Find the standard error of the difference in sample means,
Let x be average number of employees in group health insurance plan and y be average administrative cost as percentage of claims. Determine sample correlation coefficient.
Assume that flight times from SAN to ATL are exponentially distributed with a mean of 4.5 hours and a standard deviation of 0.2 hours. Assume that you must fly from SAN to ATL weekly for the lucrative consulting engagement for one year (52 flight..
To forcast the sample size within 0.02 with 90 percent confidence. The CEO of the organization needs to forcast the proportion of Canadians who own their house.
Find out a 95% confidence interval for the proportion p of adults who have a great deal of trust and confidence in the executive branch of government.
Identify each of the following variables are qualitative or quantitative
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