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Sample Proportion
A poll on a proposition showed that we are 95% confident that the population proportion of voters supporting it is between 40% and 48%.
Find the sample proportion that supported the proposition.
in a study subjects are randomly assigned to one of three groups control experimental a or experimental b. after
the following data represents the mean august temperature fahrenheit in 20 us cities 64 64 68 69 70 71 71 72 74
Age What is the age distribution of promotion-sensitive shoppers? A supermarket super shopper is defined as a shopper for whom at least 70% of the items purchased were on sale or purchased with a coupon. The following table is based on informat..
A colleague measures the following heights (in inches) of 10 CEOs selected at random: 72, 75, 75, 66, 64, 79, 79, 75, 70, and 72.
Solve the model by using graphical analysis.
What is the difference between the three ways of describing results: comparing percentages, comparing means, and correlating scores?
Comment on the graphical comparison between the estimates obtained with the automatically selected spans in Problem 8 and the estimate obtained from Friedman's smoother using the cross-validation span in Problem 1.
a fair coin is tossed 100 times. what does the chebyshev inequality tell you about the probability that the number of
question the sugar producers association wants to estimate the mean yearly sugar consumption. a sample of 16 people
Having completed your Graduate Degree from Cambridge, you have just got a job at a small investment advisory firm. Your firm recommends investment funds to Self-Managed Super Fund (SMSF) clients based on their risk and return characteristic
A tollbooth operator has observed that cars arrive randomly at and average randomly at an average rate of 360 cars per hour. (Hint use a Poisson Distribution).
prestressed wire wrapping concrete pipe is manufactured in large rolls. a quality-control inspection requires 5
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