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3) The exam grades of 7 students are given below.
70 , 66 , 72 , 96 , 46 , 90 , 50
Find
a) the mean
b) the sample standard deviation
Married Adults. In a recent year, 125.8 million adults, or 58.6% of the adult American population, were married. In a New England town, a simple random sample of 1,445 adults includes 56.0% who are married. Use a 0.05 significance level to test..
Captain Jack Sparrow is stranded on an island, awaiting rescue. Suppose that the probability for a ship to come by in a particular day is 20%. Assuming each day is independent of the next, for at least how many days should he wait (including the day ..
Produce a short report to update your manager on both the method and results of your analysis and the introduction od 'Six Sigma'.
Strategic placement of lobster traps is one of the keys for a successful lobster fisherman. An observational study of teams fishing for the red spiny lobster in Baja California Sur, Mexico, was conducted and the results published in Bulletin of Marin..
The company must also purchase connectors from two other suppliers, 20% from B and the rest from C. The rates of defective connectors from B and C are 2% and 4% respectively. You buy one and find that it is defective. What is the probability that it ..
Consider the situations and comment on whether the sample results might cause concern about the quality of the process.
Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the s..
The Jackson Engineering Company has a training program designed to upgrade the supervisory skills of production-line supervisors. Because the program is self-administered, supervisors require different numbers of hours to complete it. A study of pa..
What would be the 80th percentile for height?
Has there been a statistically significant change in the mean length of the bars?
A manufacturer of electronics kits has found
Write up your lab experience including: the necessary steps (broadly, not detail with keystrokes) to collectpersistent data, the ease of use of the software
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