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Suppose that we generate a random sample from a given distribution. If it is desired that the probability that the sample mean will be within 2 standard deviations of the mean of the distribution is at least .99, how large should the sample size be?
Your friend tells you that the proportion of active Major League Baseball players who have a batting average greater than .300 is greater than 0.56, a claim you would like to test. The hypotheses for this test are Null Hypothesis: p ≤ 0.56, Altern..
Construct a 99% confidence interval for the proportion of Americans who live in neighborhoods with acceptable levels of carbon monoxide.
Normal approximation to the Binomial distribution - Evaluate the probability that at least 195 of the students are female.
Derive the standard error of proportion, the margin error and the 95% confidence interval for the proportion indicating preference to flirting.
Sketch a curve, point out the distribution (i.e., normal , student T, Chi square), critical region(s). test statistics, critical values(s) and n p-value?
Calculate an 85% confidence interval for the population mean number of wolf pups per den at southwestern United States (US).
Develop a hypothetical table of data using a grid of 3 rows and four columns.
To avoid the problem of not having access to Tables of F distribution with values given for the lower tail, the numerator of the test statistic should be the one with:
The sample proportion of large gloves for each location is and . (Round your answers to 4 decimal places.)
Assume rf is 5% and rm is 10%. According to the SML and CAPM, an asset with a beta of -2.0 has a required return of negative 5%[=5-2(10-5)]. Can this be possoble?
Fitting of simple linear equation - Prepare an equation showing how daily sales are related to number of customers per day.
Comparing the results from (a) and (e), what happens to the required sample size when we increase the confidence level?
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