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To determine the investment proportions in the minimum-variance portfolio of the two risky assets, the expected value and standard deviation
In Alleghaney county a random sample of 19 residents had a mean annual income of $30,800 with a standard deviation of $8600.
An insurance company asserts that the mean amount paid for personal injury claims resulting from automobile accidents is $18,500.
Universal package service,ltd., delivers sm parcels to business addresses in the greater boston area. to learn more about data description on the of deliveries
Jamie collects the following income data (in thousands of dollars) for some of his street neighbors:
The numbers of hours a week that a group of boys watch TV are:
Find the mean, median, and mode of the weights of bears given in Data Set
The standard deviation of test scores on a certain achievement test is 11.4 . A random sample of 80 scores on this test had a mean of 73.1.
The following data represents the number of automobiles arriving at a toll booth during 20 intervals, each of ten-minute duration. Compute the mean, median
Using the size of the group as the sample size, select 10 different random samples of the same size.
A study on rental housing provided the following data on income and rent as a percentage of income for a sample of 5 rental units.
Shortly after their graduation, John and Mary bought two used vehicles. To satisfy their curiousity, they started to record their kilometrage each time
In determining the value of a variable, four scales of measurements are used. Describe these scales of measurements and provide examples.
Billy is collecting bottle caps from his favorite brand of soda pop. The company that produces it runs a contest:
For the following two-person, zero-sum game, are there any dominated strategies? If so, eliminate any dominated strategy and find the value of the game
Compute descriptive statistics (mean, median, mode, standard deviation) for each data set.
Terms defined and/or explained: randomness, independence, continuous, discrete, and ranked variables, attributes, derived and transformed variables
Calculate the three measure of central tendency. Also, develop a five and seven class frequency distribution table for the data.
A test has the following properties: mean = 100, S.D. = 15, and r = .74. An individual has obtained a score of 85 on this test.
A numerical value used as a summary measure for a sample, such as sample mean, is known as a
A random sample of 15 women yielded a mean pulse rate of 74.5 beats/minute with a standard deviation of 9.6. A random sample of 12 men yielded a mean pulse
The students at Johnson College are concerned about the level of student fees. They took a randon sample of 30 college and universities throughout the nation
A scientific calculator operates on the average 5.3 hour before needing a recharge.
Enter the following dataset into SPSS. Create numeric codes for the nominal variables, then use "values" to show the meaning of the numbers:
Determine the mean, median, and the standard deviation.