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Fifteen percent of Australians smoke. By introducing tough laws banning brand labels on cigarette packages, Australia hopes to reduce the percentage of people smoking to 10% by 2018 (Reuters website, October 23,2012). Answer the following questions based on a sample of 240 Australia.
What is the probability the sample proportion will be within ±0.04 of the population proportion.
An evaluation survey, designed to measure perceived program effectiveness, was administered to a sample of 39 citizens who attended a community
Suppose that we also have data on a second treadmill, made by LifeFitness. An indicator variable for brand of treadmill, say Treadmill = 1 for Cybex and Treadmill= 0 for LifeFitness, is created for a new model.
The sample mean is 2.59 and the sample standard deviation is .66. Conduct the following test using 95% level of confidence. Z-test for Unpaired data.
Determine a 95% confidence interval for the mean efficiency of a given batch of motors. If we want to cut the confidence interval by 1/3, how many motors should be tested?
country number of numbers drawn range of numbersunited kingdom 6 1 to 49finland 7 1 to 39florida 5 1 to 36assuming one
The Sentry Lock Corporation manufactures a popular commercial security lock at plans in Macon, Louisville, Detroit, and Phoenix. The per unit cost of production at each plant is $35.5, $37.5, $39, and $36.25, respectively, while the annual product..
Whether or not it would be unusual for an adult male to have a 52-cm head circumference.- Explain whether or not it would be unusual for an adult male to have a 62-cm head circumference.
The same for each of the four quarters next year. The seasonal factor for the second quarter is 145. Determine the seasonally adjusted sales for the second quarter of next year.
Of the top 20 global brands, 24 of them (70 percent) are from United States-based corporations. What effects might this weighing have on the global consumer?
A sociologist believes that the crime rate in an area is significantly influenced by the area's poverty rate and median income.
The first unit required 9800 hours to manufacture. The company expects to experience an 82% unit learning curve. Estimate the cost of the 20th unit. (Round intermediate calculations to 4 decimal places)
suppose we generate a random variable x in the following way. first we flip a fair coin. if the coin is heads take x to
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