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Compute the probability for the given frequency distribution.
Given the frequency distribution:
Soldiers
Rank/Sex
M
F
General
15
5
Major
60
20
Colonel
150
10
Sergeant
390
50
What is the probability that a male is a Major or a Colonel?
The weight of a product is normally distributed with a standard deviation of .5 ounces. What should the average weight be if the production manager wants no more than 5 percent of the products to weight more than 5.10 ounces.
Let independent variable x represent years since 1950. Determine quadratic regression model for per capita cigarette consumption.
To test the difference between two means using two mean z test.
A recent survey by alumni of a major university indicated that average salary of 8000 of its 250,000 graduates was $120,000. Does this signify population parameter or sample statistic?
A pediatrician is interested in studying the effect of Motrin on reducing temperature in young children. Four children with influenza have their temperatures taken immediately before and then 20 minutes after taking a standard dose
What is the population mean? What is the best estimate of that value?
Test whether there is difference in the proportion of viewers using Chi square test.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Assume the population standard deviation is 1.2 hours. The standard error of the mean is:
Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College.
Find out the mean sum of squares of the treatment in one way ANOVA.The profits of individual traders in three departments, labelled by A, B and C, in a medium sized firm were recorded on one day.
According to Chebyshev's theorem, proportion of values from data set that is further than 2 standard deviations from the mean is at most?
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