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The depths? (in inches) at which 10 artifacts are found are listed. Complete parts? (a) and? (b) below.
34.4 35.9 27.2 39.8 46.1 30.6 33.3 35.1 25.4 35.5
?(a) Find the range of the data set.
Range=
nothing
?(Round to the nearest tenth as? needed.)
Find the z-score for each of the following weights, and characterize it as "very light," "somewhat light," "somewhat heavy," or "very heavy."
If the company plans to target the bottom 18% of the families based on income, find the cut offincome. Assume the variable is normally distributed.
Would you expect the variance to be larger or smaller than the variance associated with the probability function used in the previous exercise? Verify your answer by computing the variance for the probability function given here.
Compute a 95% two-sided Agresti-Coull CI on the propotion of defective circuits.
What is the probability that the detected bit is not equal to the transmitted bit. This is the overall probability of error of the receiver.
Using Return Distributions. Suppose the returns on long-term government bonds are normally distributed. Based on the historical record.
Calculate the chance that your guess is correct exactly for n = 1, 2, and approximately for a selection of larger values of n, and show the results in a graph.
Suggest improvements to the histogram below generated by Excel, assuming that what is wanted is a histogram of the data (not a bar chart).
We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of 20 observations having a sample mean of 8 and a sample standard deviation of 2. What is the standard error?
Describe how blocking could be incorporated into the experiment. Be specific about how you would assign the children to treatment groups.
What is the standard deviation of demand during the lead time?
What is the correlation coefficient for the association between depression and anxiety? Explain what this correlation coefficient tells us about the relation.
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