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1. Using the hardness data from the odor data set odor .txt, do the following.
(a) Make a normal probability plot of the data.
(b) Do the data appear to be normally distributed? Explain.
2. Use the web site data webvisit .txt to do the following.
(a) Make a normal probability plot for the entire data set.
(b) Make normal probability plots for the two apparent groups in the data.
(c) Calculate the mean and standard deviation for each group.
(d) Assuming the group with the larger values is normally distributed, use your calculated mean and standard deviation to estimate the proportion of days that have more than 15,300 visits.
(e) Write a paragraph describing this set of data and the conclusions you have drawn from it.
What is the probability that a randomly selected from such a hen weighs more than 11.5 grams. What is the probability that the average of a random sample of 25 eggs from such hens will be less than 5.8 grams?
Normally distributed with a mean of $ 1750 and a standard deviation of 300. What's the probability that a randomly selected state has a per capita GNP at or below $950?
Construct a histogram using the data. Identify the modal interval of the grouped data. Tracking risk (also called tracking error) is the standard deviation of the deviation of a portfolio's gross-of-fees total returns from benchmark return. Calcul..
Marketing communications are the means by which firms seek to inform, persuade, and remind consumers-directly and indirectly-about the products and brands that they offer.
Of the 500 students who responded to a survey about recycling on campus, 350 said they recycle on a regular basis. The sample proportion is ??
A medical test for malaria is subject to some error. Given a person who has malaria, the probability that the test will fail to reveal the malaria is 0.06. Given a person who does not have malaria, the test will correctly identify that the person ..
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