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If there is a strong negative linear relationship between the variables, the value pf r will be close to what value?
We are interested in determining whether or not the variances of the sales at two music stores (A & B) are equal. A sample of 10 days of sales at store A has a standard deviation of 30, while a sample of 16 days of sales from store B has a standar..
The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.
The final grades given by two professors in introduction to operations research course have been carefully examined. The students in the first professor's class had a grade point average of 3.0 and a standard deviation of 0.2.
A chocolate bar is considered underweight if it weighs less than 8.0 oz. What proportion of chocolate bars weighs less than 8.0 oz?
a coffee machine delivers volumes of coffee into 8 oz. cups that are normally distributed having and unknown mean but
question in a given large town the number of children x in a family chosen at random has the following
What is the probability that at least one left-handed student in this class is forced to use a seat designed for a right-hander?
The sample standard deviation is $2,050. Using this information, calculate the 95% confidence interval (rounded to the nearest $10). Interpret your findings.
Calculate all measures of central tendency and depict what happens before and after the addition of the two transfer students.
assume that a quality characteristic is normally distributed. an x-bar control chart is constructed with 3 sigma
Winnipeg during rush hour are occupied by just the driver. If you choose 12 vehicles at random, what is the probability that 7 or more carry just the driver?
suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear
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