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A new phone answering system is capable of handling 6 calls every 10 minutes. Prior to installing the new system, company analyst determinated that the incoming calls to the system are Poisson distributed with a mean equal to four every 10 minutes. If this incoming call distribution is that the analyst think it is, what is the probability that in a 10 minutes period more calls will arrive than the system can handle? Based on this probability, comment on the adequacy of the new answering system.
The proportion of left handers is 0.10. What is the number of left handers in the sample and what notation is given to that number?
One of the main measures of the quality of service provided by any organization is the speed with that responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a chief ex..
Suppose that Y has a continuous distribution with pdf f2, let Z=X+Y. Show that Z has a continuous distribution and find its pdf.
quality progress february 2005 reports on the results achieved by bank of america in improving customer satisfaction
Population was computed to be 126.9 grams and the standard deviation was 1.20 grams. which food results in more uniform weight.
the scores on a certain test are normally distributed with a mean score of 45 and a standard deviation of 3. what is
to test the effect of a physical fitness course on ones physical ability the number of sit-ups that a person could do
Sixteen juvenile rats were treated with the drug Naloxone (pairs 1,3,7,8) or, as a placebo control, Saline (pairs 2,4,5,6) and then observed for their play and non-play behavior in an open field for 1.5 minutes.
Assume that a patient is believed to have one of two diseases, denoted by D1 and D2 with P(D1)=0.40 and P(D2)=0.60 and that medical research has determined the probability associated with each symptom that may accompany the diseases.
There are 40 English students enrolled. The teacher questioned 5 students who always sit in the back of the classroom. Three of the 5 said "yes" when asked if they would like "A Tale of Two Cities" as the next class reading assignment.
The amounts spent in vending machines in the United States, in billions of dollars, for the years 1999 through 2003 are given below. Determine the least squares trend equation.
Test hypothesis that average price of gasoline in western states is higher than national average for Continental USA and the District of Columbia, i.e., higher than $3.74.
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