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Bilingual Army Officers
A survey shows that in one year, the average number of bilingual officers in an army battalion was 196.
Assume that the standard deviation is 22 and the number of bilingual officers in an army battalion is Normally distributed.
Include an appropriately labeled and shaded Normal curve for each part.
a. What percentage of battalions have between 150 and 200 bilingual officers?
b. What percentage of battalions have between 200 and 250 bilingual officers?
Assume the underlying population is normal and that σ = 3.4. Is there any evidence to suggest that the download speed for the United States is greater than the world population mean? Use a = 0.01.
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Provide a link for a picture of a scatter plot where the r value is not given. Estimate what you think the r value would be and explain why
An article in the Centre Daily Times (April 19, 1997, p. 8A) included data from the United States and several European countries that indicated a negative.
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one of your companys products a flux capacitor is known to have an exponential failure time distribution with a mean of
The remainder are defective. If 4 of the products are randomly selected, find the probability that all of them are acceptable.
Each week, a prisoner is given five black chips and five white chips to distribute however he wishes between two urns, as long as each urn gets at least.
On a police sergeants exam, the historical mean scored was 80 with a standard deviation of 20. Four offiers scored 195,175,191, and 189 respectively
Many people do not "like" or "trust" single point estimates for things they need measured. Looking back at the data examples you have provided in the previous discussion questions on this issue, how might adding confidence intervals help managers..
Suppose that the true diameter is 2 mm and that the standard deviation of the measurement of the diameter is .01 mm. What is the approximate standard deviation.
Suppose that the mean weight for men 18 to 24 years old is 170 pounds, and the standard deviation is 20 pounds. In each part, find the value of the standardized
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