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In 1992,the FAA conducted 86,991 drug test on applicants for employment,1,143 were positive(a)construct a 95% confidence intervalfor the population proportion of positive drug tests.Why is the normality assumption not a problem despite the very small value of p?
Valley Fruit Products Company has contracted with apple growers in Ohio, Pennsylvania, and New York to purchase apples that the company then ships to its plants in Indiana and Georgia
Develop a linear regression equation for the given data and forecast how much money Robert will win if he spends $30.
A sample of size 9 is drawn at random from a Normal distribution. The experiment has a null hypothesis of μ = 0 and an alternate hypothesis of μ > 0. The mean of the sample is 7 with an s of 8. Is there a difference at the 1% level?
Report the t-value, whether you accept or reject Ho, and whether the difference was significant in a brief sentence.
What is the correlation between student cumulative GPA and the numbers of hours spent on school work each week? Be sure to include the computations.
With a standard deviation of 9.87 minutes. At the 0.05 level of significance, test the claim that at this airport the mean wait for takeoff is less than the mean wait for baggage.
A silver dollar is flipped 100times, with the following results: Heads =57, tails=43. What test should be used to determine if this is a fair coin?
Find out the probability distribution of blood types by gender in the group of 1000 individuals.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
Bob gets tests grades of 86, 92, and 60 He gets an 90 on his final exam. Find the weighted mean if each tests counts for 20%, and the final exam counts for 40% of the final grade.
An airline has surveyed a simple random sample of air travelers to find out whether they would be interested in paying a higher fare in order to have access to e-mail during their flight.
When using the F-statistic for hypothesis testing of the variance, which sample variance is the numerator and which sample variance is the denominator?
What is the probability that the 100 randomly selected mangoes have a mean weight less than 14 ounces?
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