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Assume the number of days it takes a homebuilder to complete a house is normally distributed with an average completion time of 176.7 days and a standard deviation of 24.8 days. Calculate the completion time that the builder has a 40% probability of achieving.
How many 3-level Latin Squares are possible? {A "different" Latin Square in this case is one that does not have the same exact set of 9 treatment combinations as another set of 9.} Provide proof (or, at least "support") for your answer.
describe the distribution of sample means shape expected value and standard error for samples of n36 selected from a
a discrete random variable can be described as binomial distribution if is satisfies four conditions briefly discuss
Roll a balanced 8-sided die and a balanced 6-sided die and add the spots on the up-faces. Call the sum X. What is the probability distribution of the random variable X?
a government official wants to find out how many people will vote for each party in a coming election. she asks a
you are an engineer for bulbs lsquor us and youve developed a lightbulb that you claim consumes less than 5 watts per
a certain type of yarn is manufactured under specifications that the mean tensile strength must be 20 pounds. a random
Graph the p.d.f and show that the probability of the part failing in the first 200 weeks is 1/8
a. how large a sample should be taken if the population mean is to be estimated with 90 confidence to within 82? the
The director of golf for the Links Group wishes to study the number of rounds of golf played by members on weekdays. At the .05 significance level, is there a difference in the number of rounds played by day of the week?
a group of 10 people agree to meet for a lunch at a cafe between 12 noon and 1215 pm. assume that each person arrives
Find a 98% confidence interval for the true mean. Assume that the account balances are normally distributed.
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