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Question: According to the U.S. Census Bureau, 20% of the workers in Atlanta use public transportation. If 25 Atlanta workers are randomly selected, what is the expected number to use public transportation? Graph the binomial distribution for this sample. What are the mean and the standard deviation for this distribution? What is the probability that more than 12 of the selected workers use public transportation? Explain conceptually and from the graph why you would get this probability. Suppose you randomly sample 25 Atlanta workers and actually get 14 who use public transportation. Is this outcome likely? How might you explain this result?
A business owner decides to use a binomial distribution to solve one of his problems. He knows there is a 60 percent probability that he will sell one of his Red Oak floors to any customer who comes into his shop and views the wood.
Explain the meaning of the multiple correlation coefficient R. What is the range of values R can assume? What are the hypotheses used to test the significance of R?
q.1 an experiment was designed to compare several different types of air pollution monitors. the monitor was set up and
Plot the random effects estimates (forest plot) for models (3c) and (3d) and provide with an appropriate caption
Clouds were randomly seeded or not with silver nitrate. Rainfall amounts were recorded from the clouds. The purpose of the experiment was to determine if cloud seeding increases rainfall. The following data is obtained:
Table 6.14 displays primary food choice for a sample of alligators, classified by length (≤2.3 meters, >2.3 meters) and by the lake in Florida in which they were caught.
a sample space s consists of five simple events with these probabilitiespe1 pe2 .15 pe3 .4 pe4 2pe5a find the
Make three-month and four-month moving averages for this time series. Does the three-month or four month moving average provide the better forecast? Explain.
Repeat (i) for n = 20,p = 0.5 for the binomial random variable, and λ = 10 for the Poisson random variable.
Find the mean, median, mode, sample variance, and range. Do you think that this sample might have come from a normal population? Why or why not?
question two types of vehicle use the university central bus station uni-link buses and national express coaches.a on
Suppose 70% of kids who visit a doctor have a fever, and 25% of kids witha fever have sore throats. What's the probability that a kid who goes to the doctor has a fever and a sore throat?
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