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Question: Comparing AP® scores The table below gives the distribution of grades earned by students taking the AP® Calculus AB and AP® Statistics exams in 2012.
(a) Make an appropriate graphical display to compare the grade distributions for AP® Calculus AB and AP® Statistics.
(b) Write a few sentences comparing the two distributions of exam grades.
An average of 90 patrons per hour arrive at a hotel lobby (interarrival times are exponential), waiting to check in. Compute the expected cost per hour of the current system
1. Suppose that you are given the following results. Find the correlation coefficient of the data: sx = 9.697, sy = 16.100, b = 1.310
Two pairs is a poker hand containing 2 cards of one denomination, another 2 cards of a second denomination, and a fifth cards of a third dimension. Find the probability of a player being dealt two pairs.
A college office has one photocopier. Faculty and staff arrive according to a Poisson process at a rate of 5 per hour. Copying times average 8 minutes according to an exponential distribution. What are the operating characteristics for this system..
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Using the value in the given data table finding the missing values
a random sample of 121 checking accounts at a bank showed an average daily balance of 280. the standard deviation of
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40 numbers are rounded off to the nearest integer and then summed. if the individual round-off error are uniformly
If test results over long period of time illustrate that 5% of x values are over 2.1 pounds and 5% are under 1.9 pounds, determine mean and standard deviation for population of products produced with this process?
You want to prove that a population mean is not 7. Data is ratio and a large sample size will be used (n = 225). When the sample is done the sample mean is computed to be 7.2 and the sample standard deviation is 1.5.
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