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Consider a worker-paced line with three process steps, each of which is staffed with one worker. The sequence of the three steps does not matter for the completion of the product. Currently, the three steps are operated in the following sequence (numbers indicate processing time of each step):
Step A
3min/unit
Step B
4min/unit
Step C
5 min/unit
If the process were operated as a pull system, what would be the throughput rate of step A?
A bag contains 5 blue balls and 8 purple balls. If 3 balls are chosen randomly and without replacement, form the bag. Let x be the number of blue balls obtained. Then x has a distribution.
Determine the lowest weight a student can have and still be qualified to enter the school.
As part of this trial, they want to find out whether there is a difference between effectiveness for women and for men. At = .05, what is the test value?
Find the margin of error for the 95% confidence interval used to estimate the population proportion.
Develop a probability distribution for the number of travelers who plan their trips within two weeks of departure.
a. Is there evidence the mean amount is different from 1.0 gallon (alpha= 0.01)? b. Compute the p-value and interpret its meaning. c. construct a 99% confidence interval estimate of the population mean amount of paint.
Why do we do power calculations with single sample z test? A) Because we can use Z area tables to calculate the power. B) Because comparing a sample mean against a population mean is very powerful
What is the 95% confidence interval for the true mean length of the bolt?
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
Chi-square tests are great to show if distributions differ or if two variables interact in producing outcomes. What are some examples of variables that you might want to check using the chi-square tests? What would these results tell you?
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
The flashlight batteries produced by one of the northern manufacturers are known to have an average life of 60 hours with a standard deviation of 4 hours. Use Chebyshev's theorem to answer the following questions.
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