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Customers arrives at a sales counter manned by a single person according to a poisson process with a mean rate of 20 per hour. The time required to serve a customer has an exponential distribution with a mean of 100 seconds. Find the average waiting time of a customer.
two points along a straight stick of length 39 cm are randomly selected. the stick is then broken at those two points.
Investment A has an expected return of $25 million and Investment B has an expected return of $5 million. Market risk analysts believe the standard deviation of the return from A is $10 million
Seven students have applied for merit scholarships. This year 3 merit scholarships were awarded. If a random sample of 3 aplications (from the population of 7) is selected,
The standard deviation is 0.73. Would it be unusual to randomly select 10 people and find that greater than 8 recognize the Famous Brand?
suppose x has density function fx for aleqxleqb and ycxd where cgt0. find the density function of
To find out whether living next to high-voltage power lines increases your chance of getting cancer, researchers selected various homes at random.
Calculate the confidence intervals about a regression line. My data is log transformed and has high R-square value for what is called "power" equation in Excel. My CI's are narrow at the top of the graph and very wide near the bottom.
the totals of individual weights of garbage discard by 62 households in one week have a sample mean of 24.443 lb.
Using your experience from previous or current employment, provide a business example where you could use a t-test to assist in a business decision. State the null and alternative hypothesis.
Identify the regression equation and make the prediction. Show your procedure, or explain how you reached your answer. Costs of Television: Find the best predicted quality score of a Hitachi television with a price of $1900. Is the predicted qualit..
Do 1-sample t-test to see if people in Chicago have travelled to fewer states than people nationwide. Utilize the 10% (.10) level of significance.
Which of the following is NOT true regarding the normal probability distribution.
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