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A statewide real estate sales agency, Farm Associates, specializes in selling farm property in the state of Nebraska. Its records indicate that the mean selling time of farm property is 90 days. Because of recent drought conditions, the agency believes that the mean selling time is now greater than 90 days. A statewide survey of 100 farms sold recently revealed that the mean selling time was 94 days, with a standard deviation of 22 days. At the .10 significance level, has there been an increase in selling time?
Find out the mean sum of squares of the treatment in one way ANOVA.The profits of individual traders in three departments, labelled by A, B and C, in a medium sized firm were recorded on one day.
There are four conditions/requirements that must be met in order to perform simple linear regression. For each of the conditions below, choose the technique that should be used to determine whether or not that the condition is met.
Given the following ordered data pairs (x, y), compute the value of the linear correlation coefficient r: (2,6) (3,0) (5,15) (5,5) (10,2).
If there is one-year warranty on the equipment, what proportion of the customers will actually make a valid warranty claim?
Dr. Stallter has been teaching basic statistics for many years. She knows that 80 percent of the students will complete the assigned problems.
A sample of 64 observations is selected from a normal polulation with a population standard deviation of 15. The sample mean is 215. Ho: U>= 220 and H1: U
Multiple choice questions based on regression - A regression and correlation analysis resulted in the following information
Name three elements of the inferential statistical analysis.
Show the decision rule graphically. Use the .05 significance level.
What is the probability that 25% or fewer male employees will indicate that they have to pick up the slack for moms working flextime?
According to Chebyshev's Theorem, how many students scored between 23 and 95?
Find out the upper and lower bounds on average life expectancy of the Canadian women such that at least 90% of all population is included.
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