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If n = 10 observations are randomly sampled from a distribution with mean µ = 9 and variance σ 2 = 8, what is the mean and variance of the sample mean?
2. Suppose you randomly sample n = 12 observations from a discrete distribution with the following probability function.
X:
1
2
3
4
P(x):
.2
.1
.5
Determine E(X‾) and σ2x.
Criticize the following definitions in light of the eight rules for lexical definitions:- "Pen" means an instrument used for writing on paper.
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a new over-the -counter cold medication includes a warning label stating that it may cause drowsiness. a researcher
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Assume the likelihood that any flight on Northwest Airlines arrives within 15 minutes of the scheduled time is .90. We select four flights from yesterday for study.
Assume that the weight of fish for both lakesare normally distributed with equal population standard deviations. Test at =.01 significance level,if the mean weights of fish are different for these two lakes
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Compute the theoretical minimum number of workstations. Work Station Task Selected
For the following population of N=10 scores 14,6,8,3,9,12,1,6. Draw the histogram showing population distribution. Locate value of population mean in your sketch and make estimate of standard deviation.
The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..
Explain the limitations presented by the study population and sample size used. Support your explanation with examples from the study. Discuss the advantages and disadvantages of the type of statistical analysis used.
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