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A Marketing Research firm was hired to estimate the mean prime-lending rate for banks located in the western region of the United States. A random sample of n = 50 banks was selected from within the region, and the prime-rate was recorded for each. The mean and standard deviation of the 50 prime rates were: mean = 9.1% and std = .24% . If the research firm wanted to be 90% confident in its estimates (z value for 90 percent = 1.645), what would be the confident interval for the estimated mean.
Please give the break-down on how to solve.
acme truck manufactures 8 and 16 wheel vehicles. in 2010 25 of trucks manufractured had 8 wheels and 75 of the trucks
the u.s. energy department states that 60 of all u.s. households have ceiling fans. in addition 29 of all u.s.
Define probability and explain its three perspectives. Provide an example of each. Explain the concept of mutually exclusive events. How do you compute the probability P(A or B) when A and B are, and are not, mutually exclusive.
It was revealed that 120 people had only 1 admission, 81 had 2 admissions, 48 had 3 admissions, 18 had 4 admissions, 18 had 5 admissions, and 15 had 6 admissions or more admissions. Does the data support the mayor's claim?
Women have been on a diet within the past 12 months. Using Normal approximation, what is the probability (±0.001) that 76% or more of the women in the sample have been on a diet?
Finds that their mean travel time is = 22.5 minutes. What are the null and alternative hypotheses for testing whether the true mean is different from 20 minutes?
If alternate hypothesis mention that m doesn't equal 4,000, determine the rejection region for the hypothesis test?
A random sample of 100 oranges is gathered and the mean diameter obtained was 5.12. If another sample of 100 is taken, what is the possibility that its sample mean will be greater than 5.12 inches.
What is the estimated index of satisfaction for a person who first married at 18, has an annual income of $26,500, has three children living, has assets of $156,000, has an index of health status.
q1. within the first six months of the new advertising campaign mccain was able to double its sales goal of a 15
Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy and storage. Let x be a random variable that represents the number of milligrams of porphyrin per deciliter of blood.
If you have a population that has a small sample, but does not meet all of the criteria for the nonparametric test how can you tell what test to use?
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