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You are running a chi-squared test. You have 2 groups with 3 characteristics each, what would your critical value be with an alpha of .025?
A. 7.378
B. 2.773
C. 12.7062
D. 5.024
E. 12.833
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
Why is cumulative relative frequency distribution so much more informative that just relative frequency distribution? Use examples to explain these differences.
the population mean of monthly wages of all college graduates under age of 30. Interpret your answer in the context of the problem.
Which probability distribution is suitable when sampling without replacement?
Rhe frequency distribution summarizes a sample of times (in minutes) between eruptions of a cretain geyser. Find the approximate population mean and approximate population standard deviation of the data.
Decide if the events A and B are mutually exclusive or not mutually exclusive. A card is drawn from standard deck of 52 playing cards.
Multiple choice question using Forecasting techniques. Which among of the following models are best suited to forecast a time series with a stable seasonality component.
How much do typical employee and his or her family spends per year on dental expenses? Sample of 45 employee reveals mean amount spend last year was $1,820, with standard deviation of $ 660.
The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Assume the batch contains 1% defective syringes.
If student is chosen at random, determine the probability that he or she is sophomore and owns a credit card.
Crystal Ball requires the following steps:
To test the difference between two means using two mean z test.
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