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If the area under a Gaussian curve is 1, then how can it be concluded that μ ± 1σ = 68.3 %, μ ± 2σ = 95.5%?. The formula for relative standard deviation is s/x * 100% where s= standard deviation
describe some benchmarking performance metrics for the airline
The circulation of a newsletter decreased from 3,200 to 2,464. What was the percent of decrease in circulation?
Testing for a linear correlation. Construct a scatter plot, find the value of the linear correlation coefficient r, and find the critical values of r from the table below using a=0.05.
an issue that faces individuals investing for retirement is allocating assets among different investment choices.
What are the most common reasons you would select a non-parametric test over the parametric alternative? Discuss the issue of statistical power in non-parametric tests (as compared to their parametric counterparts). Which type tends to be more powe..
Determine a 95% confidence interval for proportion of all voters in favour of candidate.
1. in a simple bivariate regression with 60 observations there will be residualsa 60b 59c 58d 572. which is not an
the scores on an economics examination are normally distributed with a mean of 74 and a standard deviation of 16. if
To cross a single lane of moving traffic, we require at least a duration d. Successive car interarrival times are independently and identically distributed with probability density function fT (t).
First side effect is observed. Use the formula for the sum of a geometric sequence to show that the probabilities in the probability distribution table add to 1.
A sample of 10 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 23. (Round your answers to 3 decimal places.) (a) The standard error of the mean is_____?
True mean number of years to retirement of its employees to within one month of the true mean and with 90% confidence if the range of the data is 7 years?
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