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A) What is the name of the distribution of the number of satisfied customers from this sample? B) What is the expected value? C) What is the standard deviation? You take a random sample of 100 customers and find the proportion who are satisfied. A) What is the name of the distribution of the sample proportion? B) What is the mean? C) What is the standard deviation? Suppose the time for service of a customer at this window is uniformly distributed between 0 and 10 minutes. A) What is the chance that it takes more than 6 minutes to serve the next customer? B) What is the expected waiting time if you are next in line? C) What is the name of the distribution of the average service time for 100 customers? Suppose the age of the customers for branch #1 of this bank has a normal distribution with mean 40 and standard deviation 5 years. A) Whats the chance that the next customer coming into branch #1 is over 42?
Out to right, create a 90% confidence interval estimate of sigma (σ), population standard deviation.
Construct a 90% confidence interval for the proportion of all kernels that would not pop.
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
There are two boxes, Box A and Box B. Box A has 40 tags with the number 1, 50 tags with the number 10, and 10 tags with the number 100. Box B has 40 tags with the number 100, 50 tags with the number 10, and 10 tags with the number 1.
A and B are two intersecting sets, and a, b, ab, and x represent the usual symbols for the number of elements contained in the four defined areas of the associated Venn Diagram. Find the values of ab and a if:
Percentage points in either direction from what would have been obtained by interviewing all voters in the United States." Find the sample size suggested by this statement.
What is the probability of getting a perfect score if you were forced to guess at each question?
In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of six students were given the exam before and after taking the course. The results are shown below:
Then comment on the effectiveness of the presentation: Were the frequency distributions used effectively to report the results? Why or why not?
Calculate GM's Altman Z-Score. Show your calculations. Based on your calculations, would you agree or disagree with Lutz that GM is over the worst? Explain in detail.
Tthe job is normally distributed and has a mean time of 30 minutes with a standard deviation of 8 minutes. How much time should the employer allow employees to finish the job?
When the underlying average of a time series is very stable and there is no trend, cyclical, or seasonal influences,
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