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30,000 people participated in an online poll on cnn.com conducted in April 2012 asking "Have you ever driven with a pet on your lap?" 34% of the participants answered yes and 66% answered no.
(a) Can we conclude that 34% of all drivers have driven with a pet on their lap?
(b) Explain why it is not appropriate to generalize these results to all drivers, or even to all drivers who visit cnn.com. What is the problem with this method of data collection?
(c) Is the variable in this study quantitative or categorical?
Search out the latest UK information (secondary data) on: (a) The per capita gross domestic product over the last ten years;
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An engineer claims that painting the exterior of a particular aircraft affects its cruising speed. To check this, the next 10 aircraft off the assembly line were flown to determine cruising speed prior to painting, and were then painted and reflow..
During the period of time phone-in reservations are being taken at a local university, calls come in at a rate of one every ten minutes.
1. How is analysis of variance related to regression analysis? 2. In a regression analysis, the sum of the squared deviations between y and y} is SST 5 120.0. If the coefficient of correlation is r 5 0.7, what are the values of SSE and SSR?
dole pineapple inc. is concerned that the 16 ounce can of sliced pineapple is being overfilled. the quality control
Items coming off a production line are categorized as good (G), slightly blemished (B), and defective (D), and the percentages are 80%, 15% and 5%, respectively.
deduce that these two random variables are independent
The Cold War: Why did the Cold War happen? How was this both an ideological struggle and potentially a military struggle? How did it shape American foreign policy and life within the United States?
use a binomial random variable x with n 5 and p 0.4a calculate the probability that x equals threeb determine the
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