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A process is normally distributed with a mean of 104 rotations per minute and a standard deviation of 8.2 rotations per minute. If a randomly selected minute has 128 rotations per minute, would the process be considered in control or out of control?
In control as this one data point is not more than three standard deviations from the mean
In control as only one data point would be outside the allowable range
Out of control as this one data point is more than three standard deviations from the mean
Out of control as this one data point is more than two standard deviations from the mean
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the decision rule.
test null hypothesis: Meu=80 against alternative hpothesis=negative = 80 (alpha =.05). What does this tell you about meu?
one person has 3 dollars to gamble each time he uses only one dollar the probability is 60 to lose and 40 to win. if he
If we know that the length of time it takes an MBA student to find a parking spot near the DePaul Center follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute, find the probability that a randomly selected MBA ..
A single variable X can explain a large percentage of the variation in some other variable Y when the two variables are:
A metallurgist has designed a way of increasing the strength of steel. She has discovered a chemical that is added to samples of molten metal during.
If researchers want to construct a confidence interval to see how much better juvenile goats perform when cued with touching compared to pointing
Calculating the probability that in a sequence of 1000 races there would occur a string of 35 consecutive races in which one would receive.
Construct a 99% confidence interval for the mean d of the population paired differences
Use software to access the student survey data and report a 95% confidence interval for how much taller college males are than females
An automobile club claims that the average time for a non-stop trip from new york city to Washington, D.C. by automobile is 4.5 hours. A disbelieving driver feels that the claim is incorrect.
Explain the difference between economies and diseconomies of scale. Provide examples of when an actual firm might benefit from economies
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