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A fourth grade student has a list of 8 books for her subjects. Due to rising costs, the student cannot afford to buy all eight at once but must settle for five. How many different sets of books are possible?
question the macburger restaurant chain claims that the waiting time of customers for service is normally distributed
How large a sample is required to estimate the actual proportion within a range of plus and minus 0.04? Use the 98 percent level of confidence. How is the z value found on the table?
Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-Value or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim.
Observations was x ¯ = 119.8 (actually 119.7692), and the 14th observation, somewhat of an outlier, was 158. What is the value of x ¯ for the entire sample?
The amount of income spent on housing is an important component of the cost of living. The total costs of housing for homeowners might include mortgage payments, property taxes, and utility costs (water, heat, electricity).
How large a sample should be taken if the desired margin of error is as shown below (0 decimals)?
Telephone calls arrive at a switchboard in a Poisson process at the rate of 2 per minute. A random one-tenth of the calls are long distance.
What is the probability that a randomly selected eagle's wingspan is exactly 77 inches? Explain your answer. What is the probability that a randomly selected eagle's wingspan is 77 inches or less?
Sketch the distributions involved, and (c) explain your answer to someone who is familiar with the t test for a single sample but not with the t test for independent means.
five workers are available to perform four jobs. the time it takes each worker to perform each job is given in
a study of 35 browns gerbils showed that their average weight was 4.7 ounces. the standard deviation of the population
find the weighted mean for three exams if the first one was worth 20 and the student received a 80 the second was
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