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In a factory the time it takes to assemble given equipment varies from worker to worker, but it is known that the distribution of assembly time is normal with the mean of 100 minutes and with the standard deviation of 10 minutes.
The new management gives the bonus to 10% of workers with the shortest assembly time. What is the largest assembly time that qualifies a worker for a bonus?
Is the first step to find the critical value? If so, how do I go about doing that. After I find the critical value, don't I multiply it times 10 and then add it to 100?
The accounting staff of Poe Inc. has prepared the following pension worksheet. Unfortunately, several entries in the worksheet are not decipherable.
What are the advantages of a sufficient statistic? Can you think of a possible disadvantage of sufficiency?- Why is consistency an important property?
Construct a frequency distribution, and relative frequency for number of sandwiches was ordered by costumers.
according to the us census bureau 7.1 of americans living in 2004 were between the ages of 20 and 24. you take a random
Use Hypothesis testing to determine if Dr. Boom is correct, that his sample of 25 rockets weight less than the average rocket.
Compute the return the firm should earn given its level of risk
a new drug is claimed to have effect on reducing heart rate for patients with unstable angina by 15 beats per minute
A researcher is interested in estimating the mean weight of a semi tracker truck to determine the potential load capacity.
Compute a point estimate for ρ. What are the upper and lower bounds for the 90% confidence interval for ρ (4 decimals)?
The grades on a recent stats test followed a continuous distribution whose density function (pdf) is a perfectly symmetric triangle from 0 to 100.
A chi-square test of homogeneity (independence) of counts in a contingency table tests whether counts are consistent(proportional) with the row and column
a landscaping company hypothesizes that the median number of lawns they mow in a weekend is 20. they tabulated the
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