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We select a sample of 56 oakton studens and ask if they have taken a mathe course at oakton. We find that 26% answer yes. based on this, find a 95% confidence interval for the true proportion of oakon students who have taken a math course.
Suppose that you selected 50 samples of households. What is the expected shape of the distribution of the sample mean? What is the likelihood of selecting a sample with a mean of at least $112,000?
a past issue of the journal news hamilton ohio reported on a study conducted by the kaiser family foundation regarding
A sample of 100 one-dollar bills from the Subway cash register revealed that 16 had something written on them besides the normal printing (e.g., “Bob ? Mary”). (a) At α = .05, is this sample evidence consistent with the hypothesis that 10 percent or ..
if a student scored 7.5 in his exam while the class mean is 8.7 and the standard deviation is 1.1 how much percent of
The times required to assemble a product are normally distributed with a mean of 47.5 minutes and a standard deviation equal to 8.5 minutes. What percent of the assembly workers require: (do not include % symbol)
A sample of n = 5 scores has a mean of M = 12. If one person with a score of X = 8 is removed from the sample, what will be the value of the new mean?
q1.if n 10 and p 0.70 then calculate the mean standard deviation and variance of the binomial distribution.q2.suppose
suppose that a standardized test has a mean of 250 and standard recitation of 80. if the test is normaaly distributed
Investigate the cost of a home mortgage and to determine the monthly payment.
Do you know if there is any differences in the densities of a product at certain temperatures. Here is the data that I received. Tell me if there is any difference.
Find the density for Z = X + Y. Verify that it integrates to 1. Find the median (the value of z for which P(Z =
The appropriate use of multiple regression depends on being able to make four basic assumptions about the data being used to develop the regression model:
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