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At St. Algebra College, the math department ran some special sections of the freshman math course by using a variety of innovative teaching techniques. Students were randomly assigned to either the traditional sections or the experimental sections, and all students were given the same final exam. The results of the final are summarized here. What was the effect of the experimental course?
How many such random checks would they have to do to estimate the true percentage of people who misrepresent their backgrounds to within with 98% confidence?
A bank manager claims that the average loan to the bank's customers is $4800. The population standard deviation is $800. A sample of 25 customers had an average loan of $4235. At α = .10, does the evidence support the manager's claim
Let T ~ gamma (20, 0.0002) be the total operating time for the units described in Exercise. Use the m-function for the gamma distribution to determine.
The Wade Tract in Thomas County, Georgia, is an old-growth forest of longleaf pine trees (Pinus palustris) that has survived in a relatively.
Find the test value for the difference in the proportion of employees who were ever late for work in the past year.
What is the city mileage standard deviation for this SUV model?
the number of bank robberies that occur in a large north american city is poisson distributed with a mean of 1.8 per
for the most recent year available the mean annual cost to attend a private university in the united states was 20082.
A person decides to take a telephone survey of 40 families in the 721-exchange area (sometimes referred to as prefix). You want an excellent representation of all subscribers in the exchange area.
Using schools as blocks, describe a randomized block design to compare three teaching methods.- Explain why schools should be used as blocks.
What is meant by a distributed lag model and write the equation for a general distributed lag model with an infinite number of lags and for one with k lags.
Hays Medical Center wants to estimate the percentage of adults who exercise at least 1 hour per week. How large a sample should be selected.
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