The following maintenance tasks were observed:
Task Time (Min.) Frequency Task Time (Min.) Frequency
35 2 25 12
17 6 19 10
12 2 21 12
15 4 23 13
37 1 29 8
27 10 13 3
33 3 9 1
31 6 – –
a.) What is the range of observations?
b.) Assuming 7 classes with a class interval width of 4, plot the data and construct a curve. What type of distrubtuion is indicated by the curve?
c.) What is the mean repair time?
d.) What is the standard deviation of the sample data?
e.) The system is required to meet a mean repair time of 25 minutes at stated confidence level of 95% Do the data reveal that the specification requirements will be met? Why?
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more
Recent Comments