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P(A1)= .20, P(A2), and P(A3)= .40. P(B1IA1) = .25. P(B1IA2) = .05. P(B1IA3)=.10.
Use Bayes' theorem to determine P(A3 I B1)
Run a regression of Y on X in Excel and turn in the output with a note explaining what the coefficients {correlation coefficient (multiple R), standard error, t-statistic and F-statistic} mean.
Determine the sample size needed in order to be 99% confident that the sample proportion of the current customer accounts is within .03 of the true proportion of all current accounts for this company.
A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:
A sample of 50 provided a sample mean of 14.15. The population standard deviation is 3.
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
Determine a 95 percent confidence interval for the population mean.
Using the confidence interval when conducting a two-tail test for the population mean we do not reject the null hypothesis if the hypothesized value for:
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.
The following data from a sample of 100 families show the record of college attendance by fathers and their oldest sons: in 22 families, both father and son attended college; in 31 families, neither father nor son attended college; in 12 families,..
Suppose the population is normally distributed they make a decision to do a hypothesis test.
Point out your final decision concerning hypothesis test and compute p-value for test.
For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.
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