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The time to complete a manual task in a manufacturing operation is considered a normally distributed random variable with mean of 0.50 minute and a standard deviation of 0.05 minute. Find the probability that the average time to complete the manual task, after 49 repetitions, is less than 0.465 minute
What is the shape mean and standard deviation of the resulting distribution of the sample mean? What is the probability that the mean of the sample of 42 is more than 52 hours?
Makers of generic drugs are required to demonstrate that their generic drug does not differ significantly from the "reference" drug it is intended to imitate.
Suppose a candidate running for sheriff claims that she will reduce the average of emergency response to less than 30 minutes. (30 minutes is thought to be the average response time with the current sheriff.)there are no past records, so the actual s..
The researcher in exercise decides to conduct the same study using a within - participates design to control for differences in cognitive ability.
a medical test for malaria is subject to some error. given a person who has malaria the probability that the test will
use the random variable x with values x 2 3 4 5 or 6 with px 0.05xa determine p x 4 b find p x gt or eq 4 c what is
Suppose the annual consumption of chicken mean is 20.84 pounds per person, and that the standard deviation for the consumption of chicken per person is 9.193 pounds.
The bank wants to find out the waiting time of their customers during the Friday evening hours from 5pm to 8pm. Using the data in ungrouped form, compute the Standard Deviation, using the computational formula.
q1.in a recent study of 250 female freshmen showed that 70 did not want to work after marriage. find the 95 confidence
Explain the difference between a left-tailed, two-tailed, and right-tailed test with examples from your own experience for each.
one measure of the risk or volatility of an individual stock is the standard deviation of thetotal return capital
Calculate the sample statistic and standard error you will use to create the test statistic.
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