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In a survey of women in the U.S. (ages 20 - 29), the mean height was 64.2 inches and the standard deviation was 1.9 inches.
(A) What height represents the 95th percentile?
(B) What height represents the third quartile?
discuss the various sampling methods we might use in determining which items to include in a
You have been given a report that presents two regression models with different numbers of independent variables. You do not have the data so you cannot re computed regression models. Nevertheless, you have been asked to find out which model is b..
a random variable x follows a normal distribution with a mean of 10 and standard deviation of 3. a standardized value
Choose one time-series describing Spirit Airlines and make a line chart. (b) Describe the trend (if any) and discuss possible causes.
The mean numbers of trials to learn maze for the group with the colrful wallpaper is 11. What is the standard deviation of the distribution of means?
Develop a schedule for hiring new CSAs.What is the total cost of this schedule and Discuss any limitations that exist for this solution.
What is the probability the system works under these conditions? The probability A works is .90 and the probability B functions is also .90.
Construct a 95 percent confidence interval for the true mean.
a statistics instructor collected data on the time it takes the students to complete a test. the test taking time is
Find the system reliability for each of the following.: (b) Which has the higher reliability? How could you configure a system of such relays to bring RS(t) up to 0.999?
State the correct decision and give justification for your decision.
When the machine is properly calibrated, what is the probability that the mean for a simple random sample of this size will be at least 26.2 seconds? Based on the probability determined in part (b), does it seem likely that the machine is properly..
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