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In a study, 65 % of the 100 Republicans surveyed, favored the bill for a salary increase and 60 %of the 200 Democrats surveyed, favored the same bill for a salary increase. Test whether the proportions of Republicans and Democrats favoring this bill are the same, using alpha = 0.05.
Linear equation that relates Celsius to Fahrenheit the oC is celsius in degrees and the oF is for Fahrenheit: Your company was very impressed with your results from the recent study. They have asked that you investigate another location for them an..
A cell phone company collects data from a random sample of 500 households. The results indicate that 135 of the households would add an extra cellular number, provided it was offered at a reduced monthly cost.
What is the minimum sample size needed in order for you to be confident that your estimate is within 5 of ? Use the value for the population standard deviation of scores on this subsection.
By using the maximax criterion, what decision should be made by the decision maker?
Based on the empirical data determine the following probabilities:
Simplify each expression-Perimeter of a rectangle. The perimeter of a rectangular backyard is 6x+6 yards. If the width is x yards, find a binomial that represents the length.
Provide an example of an application of the normal distribution. Explain why standard normal distribution can be used to find the probabilities for all normal distributions?
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level.
Consider that you are a line manager in your current Corporation. There is a0.50 probability that you will be promoted this year. There is a 0.65 probability thatyou will get a promotion or a raise. The probability of getting a promotion and a raisei..
Describe a situation in which correlation analysis or regression analysis can be (or was) misused to explain cause and effect relationship in a case of fortuitous correlation.
A snack food manufacturer selected a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is 0.15
Describe a where you might want to use a dummy variable in a multiple regression. What would the dummy variable buy you in that situation?
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