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Towers Perrin, a New York human resources consulting firm, conducted a survey of 1100 employees at medium sized and large companies to determine how dissatisfied employees were with their jobs (The Wall Street Journal, January 29, 2003). A total of 473 employees indicated they strongly disliked their current work experience.
a. What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?b. At 95% confidence, what is the margin of error?c. What is the 95% confidence interval for the proportion of the population of employees who strongly dislike their current work experience?
A Taguchi experiment is to be performed on the effects of lift, bore, stroke, and compression on engine performance with horsepower as the outcome variable. The factors were tested at each of the following levels in hopes of improving engine horse..
A United Nations report shows the mean family income for Mexican migrants to the U.S.. is $27,000 per year. A FLOC evaluation of a sample 25 Mexican families units reveals a mean to be $30,000 with a sample standard deviation of $10,000.
There are 6 different factors labeled as A, B, C, D, E, and F. Given that D=AB, E=-AC, F=-BC, please provide the corresponding 26-3 design table. Also, please write down the complete defining relation and the complete effect alias structure.
Construct a 99% confidence interval estimate of the population mean amount of paint in a 1-gallon can.
At a national seashore, the number of swimmers per day who require lifeguard assistance averages 4.1, on any day when 7 or more swimmers are assisted, the lifeguards receive a $20 bonus for extra effort.
Random sample of 40 male math professors are selected. What is the probability that the sample mean salary of male math professors will not exceed that of the female math professors?
The purchase of a coin-operated laundry is being considered by a potential entrepreneur. The present owner claims that over the past 5 years the average daily revenue has been $675 with a standard deviation of $75.
A suburban hotel derives its gross income from its hotel and restaurant operations. The owners are interested in the relationship between the number of rooms occupied on a nightly basis and the revenue per day in the restaurant.
Pepsi wanted to test to determine if the males preferred Pepsi more than the females. (a) PConduct the appropriate test and describe the results (ick your own alpha value)
Using quadratic regression model find the estimated number of planes.
Construction of frequency distribution table for the given continuous data.
What is the probability of obtaining 4 ones in a row when rolling a fair, six-sided die? Interpret this probability.
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