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The historical output by employees is a mean of 120 units per hour with a standard deviation of 28 units. A new employee is tested on 30 different random occasions and is found to have an output of 107 units per hour. Does this indicate that the new employee's output is significantly different from the population mean output?
For the following sample, what is the 95% confidence interval for the population mean, if the population variance is known to be 9: 25.6, 19.8, 22.3, 24.1, 18.7, 21, 20.5, 19.8, 22.7, 23.2, 21.8, 22(n=12)? What is the 99% confidence interval if the population variance is unknown?
The following table presents the total sample size and the percentage distribution of a grouped variable, "Hours of Shopping this Year." Calculate the mean and the variance
If the reserve requirement is 20%, if initial new deposits are $100,000 what is the maximum amount of total loans that can be created by banks
In particular, you would like to determine whether the two populations have the same mean age. A sample of 37 infected patients has mean age of 27.9 years and a standard deviation of 5.6 years; a sample of 19 patients who are not infected has mea..
A company is trying to determine how to allocate its $145,000 advertising budget for a new product. The company is considering newspaper ads and television commercials as its primary means for advertising. Formulate an LP model for this problem to..
Two of the 12 herb tiles contain a blue tint that matches the kitchen color scheme. What is the probability that these 2 tiles will be included in the splashguard?
The price of XYZ Corporation stock is normally distributed all through the year with mean of $42.00 per share and a standard deviation of $2.25 per share. Suppose that the stock is traded 240 days out of the year.
Students from the class for an oral exam, what is the probability that 3 female students and 5 male students will be selected?
The probability of contracting the kissing disease is .23 when one is exposed to a certain provocative environment. Sixty people are so exposed. What is the probability that no more than 10 are infected with this dreaded disease.
calculate a probabilty of getting 2 aces or 2 kings
a manufacturer wants to increase the absorption capacity of a sponge. based on past data the average sponge could
in a sample of discharge of suspended solids from a phosphate mine it was noted that the mean daily discharge was 27
Compute z values for each and comment on your findings.
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