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Suzy, senior sales analyst hired by the dealership wants to REASSESS risks. She assumes that a number of cards sold by one sales person during a certain period of time follows the Poisson distribution with the intensity = 0.15 car/day. Yet the progress is measured by a random variable (Y) defined as the number of cars sold after 40 days.
1. Find P[Y>8]
2. What proportion of sales personnel is expected to sell at least 5 and at most 12 cars during the 40-day period?
3. What is the chance to sell fewer than 12 cars during the 40-day period?
let b and c be independent random variables uniformly distributed over 07 and 03 respectively. what is the probability
The null hypothesis is to be tested at 95% confidence. Determine the critical value for this test. What do you conclude?
suppose probability samples of size n2 are selected from 1 2 3 4 with probabilities d1.4 d2.4 d3.1 and d4.1.
Find the asymptotic distribution of the MLE of the indicated parameter and find formulas for approximate standard errors of the MLE.
a traditional not agresti-coulls two-sided confidence interval for the proportion of people who support mr. green in an
A study of 35 golfers showed that their averages score on a particular course was 92. The standard deviation of the sample is 5.
the owner of a donut shop wishes to determine the best mix for her three products zingers crullers and eacuteclairs.
The sample data are summarized by the statistics n = 27, x = 4.6 years, s- 1.9 years.
A company has two different processes that make credit cards. Suspecting that machine B has a higher variability than machine A the manager orders a test to be run. The following data was collected:
a production process is set to manufacture bolts with a diameter of .5 inches. the process has a standard deviation of
fine motor skills were measured in a sample of kindergarteners before and after 6 months of occupational therapy.
The standard deviation of all possible x values is called the?
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