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A company provides component parts for an engine. Parts specifications suggest that 95% of items meet specifications. The parts are shipped to customers in lots of 100. Let X be the number of defective items in a given lot. What is the distribution of X?
The McNemar test is a test on a 2x2 classification table when you want to test the difference between paired proportions. Chi-square test for 2X2 tables compares the tallies or counts of categorical responses between two (or more) independent grou..
A five-year old study claims that selling prices of new homes / condominiums in the New York area have a normal distribution with mean = $180,000 and standard deviation = $40,000.
three vendors have vegetable stands in a row. customers arrive at the stands 1 2 and 3 at rates 10 8 and 6. a customer
starting salaries of 64 college graduates who have taken a statistics course have a mean of 43500 with a standard
Describe what is measured by the estimated standard error in the bottom of the independent-measures t statistics.
a study on students drinking habits asks a random sample of 40 greek ones who belong to a fraternity or sorority uf
suppose a school has 20 classes 16 with 25 students in each three with 100 students in each and one with 300 students
in the last decade society in general and the judicial system in particular have altered their opinions on the
one prominent physician claims that 70 of those with lung cancer are chain smokers. if his assertion is correct the
Whose characteristics can be assume to be independent of each other, were examined. Let X denotes the number of defective computer chips.
Does this data provide evidence at the .05 significance level that there is a difference in the proportion of humorous ads in British versus American trade magazines?
Employees of a local university have been classified according to gender and job type. The following table provides data about the employees.
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