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Question:
a) Discuss what is meant by Quality control and quality improvement. b) What are the limitations of a quality control charts?
On average a certain intersection results in 3 traffic accidents per month. What is the probability that for any given month at this intersection
Apply Scheduling Theory in order to optimize a schedule of events and reduce lost productivity
Find the minimum sample size needed, using a prior study that found that 35% of the respondents said they used an online service or the Internet to make travel reservations.
To exercise your skills, you are to perform the following using different tools available to you (e.g. Excel spreadsheet, graphing calculator, etc.) and write and explanation on your findings:
Use the expected collision payment to determine the collision insurance premium that would enable the company to break even on the policy.
A random sample of n = 4 scores is obtained from a normal population with = 20 and = 4. What is the probability of obtaining a mean greater than M = 22 for this sample?
What is a probability notation? What are the advantages and disadvantages of using a probability notation? How does probability notation aid in decision making?
Determine each of the following from the output:
Assuming 250 of each sex, can we conclude that there is a significant difference in the proportions at a 0.05 level of significance?
A leasing firm claims that the mean number of miles driven annually,M , in its leased cars is less than 13020 miles. A random sample of 90 cars leased from this firm had a mean of 12750 annual miles driven.
q1. according to the statistical abstract of the united states there are 31.1 milshylions one-person households 38.6
She surveys 100 randomly selected families and finds the mean income to be $96,321 with a standard deviation of $9555.With a0.05, is she correct?
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