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1. Compare and contrast chain sampling and sequential sampling plans. When are they used?
2. Discuss the assumptions made in Deming's kp rule. When would you use this rule?
3. What are the advantages and disadvantages of variable sampling plans over those for attributes?
question 1 draw ogives from the following data and measure the median value. verify it by actual calculation.central
Your performance as a principal depends on how well your entire group of eight-graders scores on the exam. What is the likelihood that your group of 115 eighth-graders will have an average score below 580?
question 1current weekly demand forecast for an item follows a normal distribution with a mean of 100 units with a
Find the margin of error for this poll if we want 95% confidence in our estimate of the percent of American adults who approve of cloning humans.
What is the difference between a normal distribution and a standard normal distribution? What is the purpose of using a standard normal distribution instead of the normal distribution?
A research firm wants to compare the miles per gallon of unleaded regular, mid-grade, and super grades of gasoline. They drive the same car under approximately similar driving conditions and changing out the type of gasoline used.
Suppose an Atlantic croaker fish is randomly selected. Find the probability that length of the fish is between 8.5 inches and 10.5 inches.
(a) Show that this second probability statement can be written as Pr (nS2/b tr nS2/a) = 0.95. (b) If n = 9 and s2 = 7.63, find a 95 percent confidence interval for u2.
in designing an experiment involving a treatment applied to 5 test subjects researchers plan to use a simple random
Nursing program gives a qualifying exam to students applying for admission. The grades on the exam have a mean score of 80 with a standard deviation of 6. Describe the distribution of grades.
A company that manufactures specialty batteries used as auxiliary back- ups for sensitive laboratory equipments in need of constant power sup- plies claims that its new prototype, brand A, has a longer lifetime (un- der constant use) than the indu..
mean grade point average. as part of a study of grade inflation you want to estimate the mean gpa of all current
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