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Question - Manufacturing and Product Development Staples has six special drafting pencils for sale, two of which are defective. A student buys two of these six drafting pencils, selected at random. Let the random variable X be the number of defective pencils purchased. Construct the probability distribution for X.
a clinical trial was conducted to test the effectiveness of the drug zipiclone for treating insomnia in older subjects.
Teenage pregnancies. The U.S. National Center for Health Statistics reports for 2006 the distribution of teenage pregnancies by age range and ethnicity of the mother.
Explain in plain language why a signi?cance test that is signi?cant at the 1% level must always be signi?cant at the 5% level.
While in Paymor Hospital such exams were given in 110 out of 200 cases. In a left-tailed test for equality of proportions, the p-value is?
there are 40 fishes in a pond. you capture 20 of them for an experiment mark them and release to the pond. an
Each,day Monday through Saturday, a baker bakes three large chocolate cakes and those not sold on the same day are given away to a food bank.
Please define correlation and regression. Describe a management or business-related scenario where a researcher might be interested in whether a number of variables are correlated (without any assumptions about causation).
Hoops. A basketball player has made 80% of his foul shots during the season. Assuming the shots are independent, find the probability that in tonight's game.
What is the sum of these probabilities? Why do you expect the sum to have this value?
Withdrawals of $400 for 3 years. Find the balance of her account just after the last withdrawal (on february 1,2001)if the monthly interest rate is 6%.
(a) What is the shape of this sampling distribution? [How do you know?] (b) What is the mean of this sampling distribution? (Give your answer correct to one decimal place.)
Find the probability that the number of cars sold tomorrow will be between two and four (both inclusive).- Find the cumulative distribution function of the number of cars sold per day.
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