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Managers at the Dew Drop Inn are concerned about the increasing number of guests who make reservations but fail to show up. They have decided to institute a policy of over-booking like larger hotel chains. The profit from a paying guest averages $50 per room per night. The cost of putting up a guest at another hotel is $100 per room per night. Records show the following number of no-shows over the past three months:
No-Shows
Frequency
0
18
1
36
2
27
3
9
Construct a perfect one-factorization of K_2n for infinitely many values of n. Prove the factorizations are perfect
Sometimes data is easy to collect, at other times it may not be as easy. Sometimes in the real world the number of things/people we want to collect data from or about are so huge and we have to make decisions on how this can be done in as reliable a ..
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues will vary with how well taxpayers comply with the new tax code.
Find the mean and the standard deviation of the sampling distribution of x bar, and find an interval containing 95.44 percent of all possible sample mean returns.
Assume that the population is normally distributed. Can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months?
It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot." What is the standard deviation for the sample proportion?
You want to determine if your widgets from machine 1 are the same as machine 2. Machine 1 has a sample mean of 500 and a population standard deviation of 6 and a sample size of 18.
A certain medication is known to increase the pulse rate of its users. The variance of the pulse rate is known to be 10 beats per minute.
Compute a 95% confidence interval for the average time spent in training per year at this firm. Develop a graph showing the data below as a frequency distribution. Note the mean and the confidence interval on the graph.
Company are interested in how a new spaghetti sauce made from green tomatoes (and green in color) will compare to their traditional red spaghetti sauce. They are worried that the green color will adversely affect the tastiness scores.
Ms Lisa is the budget director for the New Process Company. She would like to compare the daily travel expenses for the sales staff and the audit staff. She collected the following sample info:
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