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Determine the distributions given below represent a probability distribution. Justify your answer.
x
3
6
8
P (x)
0.2
0
1
If you have multiple regression output with 2 independent variables and R-Square is .9682, what does R-Square indicate?
Given that P (A) = 0.7, P (B) = 0.5, and P (A B) = 0.8. Find the following probabilities:
Determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.
What are the two ways of testing a correlation coefficient for significance?
In 1,000 samples, assuming that H 0 is true, how many times would you expect to commit Type I error if:
A random sample of 100 oranges is gathered and the mean diameter obtained was 5.12. If another sample of 100 is taken, what is the possibility that its sample mean will be greater than 5.12 inches.
The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..
Findout the 98% confidence interval for true mean. Findout a 98% confidence interval for the cigarette tax in all 50 states.
The 99% confidence interval estimate for a population variance when a sample standard deviation of 12 is obtained from a sample of 10 items is:
At the .05 significance level, can we conclude that the guideline is still reasonable?
A company makes molded plastic toys. They study the plastic injection process into the molds. A common cause of variation and What are the control limits for an chart
Findout either the given correlation is significant at given level of significance. Illustrate what does sample size have to do with the significance of r.
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