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As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86. a)Construct a 90% confidence interval for the proportion of all kernels that would not pop. b)Check the normality assumption. c) Try the Very Quick Rule. Does it work well here? Why, or why not? d) Why might this sample not be typical?
Develop a linear regression model for these data and forecast carpet sales if 30 construction permits for new homes are filed.
If one of these consumers is randomly selected, what is the probability that the person prefers design A and is under 25?
Find the probability that the first card is a two and the second card is a ten. Round your answer to three decimal places.
Nielsen publishes a weekly ranking of television programs as well as a weekly ranking of four major networks: ABC, CBS, NBC, and Fox. What kinds of decision or actions are based on the Nielsen rankings?
Line up for a family photo, with the condition that the youngest child is in the centre, how many distinguishable arrangements are there?
Ed Norris has developed a Web site for his used textbook business at State University. To sell advertising he needs to forecast the number of site visits he expects in the future. For the last 6 months he has had the following number of site visit..
What is the basic principle that can be used to simplify a polynomial? What is the relevance of the order of operations in simplifying a polynomial?
The average service time appears significantly longer than 90 seconds. What is the actual average service time? What critical value should be used in the magazine"s hypothesis test?
Management announce an incentive pay for the top 30% producers. what is the minimum number of units that a worker should produce in order to qualify for the incentive pay?
Finding appropriate z- and t-scores is important when constructing confidence intervals. Confidence intervals allow one to estimate important population parameters such as population mean, population proportion, population standard deviation, etc.
X is a random variable that represents ph of arterial plasma, the mean of the x distribution is 7.4. a random sample of 31 patients with arthritis took the drug for 3 months blood test
Using the following information, find the equation of the regression line, and predict the heart rate when 0.27 milligrams of the drug is used.
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