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Sports and Leisure During the summer of 2013, parents spent approximately $856 per child on summer activities. This amount was greater than in 2012, and it was expected to rise again in the summer of 2014.15 Suppose a random sample of parents with children not yet in high school was obtained. Each was asked how much they spent per child for summer 2014 activities. Assume the distribution of amount spent per child is continuous. Use the Wilcoxon signed-rank test to determine whether there is any evidence that the median amount spent per child during the summer of 2014 is greater than $856. Use a = 0.05.
Scenario Three: On Friday's the Elm Street branch opens a second lane (window) during its 8 hours of operation in order to accommodate employees from a local manufacturing plant who want to deposit their paychecks. When a customer in the single line ..
suzy senior sales analyst hired by the dealership wants to reassess risks. she assumes that a number of cards sold by
Find the 99% confidence interval of the mean score for all golfers if this is a sample of 50 golfers instead of a sample of 35. Which confidence interval is larger and why?
Let X be the number of calls you need to make until you find your friend. Give the probability mass function for X. How many calls do you expect to make until you find your friend?
karen wants to advertise how many chocolate chips are in each big chip cookie at her bakery. she randomly selects a
Before launching its Buyers' Assurance Program, American Express wanted to estimate the proportion of cardholders who would be interested.
Determine r.m.s. error for regression prediction of height at 18 from height at 6.
Using the same p' and level of confidence, suppose that n were increased to 100. Would the error bound become larger or smaller? How do you know?
using the simple random sample of weights of women from a data set we obtain these sample statistics n40 and x146.82
If a student guesses on each question, what is the probability that the student will pass the test?
According to the U.S. Bureau of Labor Statistics, personal expenditures for entertainment fees and admissions averaged $349 per person in the Northeast and $420 in the West.- Construct and interpret the 99% confidence interval for the test.
the filling variance for boxes of cereal is designed to be .02 or less. a sample of 41 boxes of cereal shows a sample
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