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Capability indexes for the waterproofing process, continued. We could improve the performance of the waterproofing process discussed in the previous exercise by making an adjustment that moves the center of the process to μ = 2500 mm, the center of the specifications. We should do this even if the original specifications remain in force, because this will require less sealer and therefore cost less. Suppose that we succeed in moving μ to 2500 with no change in the process variability σ, estimated by s = 383.8.
a) What are Cp and Cpk with the original specifications? Compare the values with those from part (a) of the previous exercise.
(b) What are Cp and Cpk with the tightened specifications? Again compare with the previous results.
suppose the current price of gold is 930ounce. suppose also that the price 1 month from today has a normal distribution
when supermarket customers are offered free samplesthey take them 60 of the time. when 317 customers are observed what
In Seattle, the sample size was 22, and the mean duration before resoling was 8.5 months. What is the overall mean duration before resoling is necessary for brand A jogging shoes?
In a group of seven adult friends, what is the probability that: a) no one has done a one-time fling?
Problem: Identify a problem in your work that might be addressed using a two-way analysis of variance. Specify the independent and dependent varibles.
fine motor skills were measured in a sample of kindergarteners before and after 6 months of occupational therapy.
If the student IQ score is 90, what is the probability that another student randomly selected has an IQ score of below 90?
the rent for a one-bedroom apartment in southern california follows the normal distribution with a mean of 2250 per
Determining probability when guessing answers. Test comprise of multiple- choice questions each having 4 possible answers (a, b, c, d) one of which is right. Suppose that you guess answers to six such questions.
In comparing two variances below, determine test value and what are degrees of freedom that must be used?
1. the distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 7.8
question 1aa statistics practitioner wants to test the following hypothesesho p.70h1 pgt .70a random sample of 100
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