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An engineering department consists of15 electrical, 15 chemical, 15 industrial, and 15 civil engineers. An interdisciplinary task force of 10 people will be formed from this department. In how many of them, there would be 5 electrical and 5 chemical engineers?
In random samples of 25 from each of two normal populations, we found the following statistics: Estimate the difference between the two populations means with 95% confidence.
The City Transit Authority plans to hire 8 new bus drivers. From the group of 100 qualified applicants, of whom 55 are men and 45 are women, 8 names are to be selected by lot. Suppose that Mary and John Lewis are among the 100 qualified applicants..
a cereal manufacturer has a machine that fills the boxes. boxes are labeled 16 oz so the company wants to have that
the number of monthly breakdowns of a computer is a random variable having poisson distribution with lambda1.8. use
If the city manager knows the average salary nationally is $38,300, which test of significance should be used? Why?
q1.heights of men on a baseball team have a bell-shaped distribution with a mean of 177cm and a standard deviation of
An investment broker reports that the yearly returns on common stocks are approximately normally distributed with a mean return of 12.4 percent and a standard deviation of 20.6 percent.
q1. in a study of the effects of stress on illness a researcher tallied the number of colds people contracted during a
question an outbreak of food-borne illness was attributed to salmonella. epidemiologists determined that the outbreak
the american veterinary association claims that the annual cost of medical care for dogs averages 100 with a standard
Data on the number of occurrences per time period and observed frequencies follow. Use a=.05 and the goodness of fit test to see whether the data fit a Poisson distribution.
Findout the normal model for the given proportions. The professor has every student toss a coin 50 times also calculated the proportion
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