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Out of a total of 10 college textbooks estimate the standard devialtion of their ages if the oldest textbook is known to be 7.9 years old and the newest textbook is 1.3 years old.
Is there evidence that teams with higher total payrolls tend to be more successful? Justify your answer.
A research study reports t(14) = 2.17. How many individuals participated in the study? Is this t statistic sufficient to reject the null hypothesis using a two-tailed test with alpha = 0.05?
What is the probability density function for this uniform distribution?
By taking the Laplace transform and using the convolution theorem, obtain the solution of the integral equation f(t) = 1+t+int[(t-u)f(u)du,u=0..t)
A real estate agent wants to compare the variation in the selling price of homes on the oceanfront with those 3 blocks away A sample of 21 oceanfront homes sold within the last year revealed the standard deviation of the selling prices was 45,600.
The following lab is to give you a chance to generate your own graphs and statistics using software.
Suppose 100 randomly selected customers were asked to rate a particular service they recently had on a scale of 0 to 10. The sample mean rating was found to be 7.3.
If 3 different factor levels show a lot of variation between levels this implies:
The standard for this material requires that impact strength must be greater than 1.0ft-lb/in. The sample average and standard deviation obtained were 1.25 and 0.25 respectively.
Using smoothing constant of w = .80, compute the value of exponentially smoothed series in 1983.
SPSS OUTPUT INSTRUCTIONS
Suppose that the average monthly pay for U. S. production worker is 2000$.Assume that available date indicate that production worker wages normally distributed with a standard deviation of 400$ .Suppose that a simple random sample of sides n=6..
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