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A random sample of 20 observations has been drawn from a normal population, and the sample variance is found to be s2 = 4.53. Determine the 95% confidence interval for σ2.
(c) What is the mean and standard deviation of orders received per day?
in studying the occurence of genetic characteristics the following sample data were obtained. at the 0.05 significance
Use normal approximation to the binomial distribution to determine the answer if this probability cannot be determined explain why.
the probability of a manufacturing defect in an aluminum beverage can is .00009. if 100700 cans are produced find the
Extract from published statistics, indices showing monthly changes in prices and average earnings since January 2005. a. Rebase these indices so that the current year becomes the base year, stating any assumptions made.
Let f(x) be the uniform density on [0,1] and let g(x) be the density on [0,1] given by g(x)=ce^x, where c is the normalizing constant. Let F, and G be the corresponding CDFs. Find the density function corresponding to the new CDF H(x) = F(x)G(x).
the forecast for the third quarter is 1000 units the seasonal index for the quarter is 1.10. what are the seasonally
What is the minimum sample size needed in order for you to be confident that your estimate is within 5 of ? Use the value for the population standard deviation of scores on this subsection.
A mean of 400 labour hours and a standard deviation of 100 labour hours. What is the probability that the bridge gets constructed between 350 and 450 hours?
Make a plot of the ratio of the number of boys born per year to the number of girls in the U.S. What do you see? In what year did we see the most total number of births in the U.S.?
Hi, the problem is this. Pls choose only one to answer thanks Let X1, X2,..., Xn, be independent Bernoulli random variables with P[Xi = 0] = 1- p, p = 1, 2,...,n. Prove that is sufficient for p. Let X1 & X2 be Poisson random variables with. Prove th..
Conduct all six steps of hypothesis testing using the appropriate test. Calculate the Confidence Interval at the 95% Confidence Level. Calculate and interpret the effect size.
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