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Question: Trees, part II. Later on, the forester in Exercise shows you a histogram of the tree diameters he used in analyzing the woods that was for sale. Do you think he was justified in using a Normal model? Explain, citing some specific concerns.
Exercise: Trees. A forester measured 27 of the trees in a large woods that is up for sale. He found a mean diameter of 10.4 inches and a standard deviation of 4.7 inches. Suppose that these trees provide an accurate description of the whole forest and that a Normal model applies.
a) Draw the Normal model for tree diameters.
b) What size would you expect the central 95% of all trees to be?
c) About what percent of the trees should be less than an inch in diameter?
d) About what percent of the trees should be between 5.7 and 10.4 inches in diameter?
e) About what percent of the trees should be over 15 inches in diameter?
a student must pass a placement exam to get into a needed class. suppose the student guesses on all the answers and
The box plots below show the real estate values of single values of single family homes in two neighboring cities, in thousands of dollars.
Run a simple linear regression of these five pairs of numbers and estimate a linear relationship between income and percentage growth in wealth.
A study is done to determine which of two soft drinks has more sugar. There are 13 cans of Beverage A in a sample and six cans of Beverage B.
Because we usually control the value of a, one could simply set the probability of a type I error to a very small value, say 0.0001. What's wrong with given strategy?
in an article shelf-space strategy in retailing published innbspproceedings southern marketing association the effect
Interpret this data using regression and interpret all the findings, R 2 , F, IV coefficient, and the intercept.
In large accounting firm, the proportion of accountants with MBA degrees and at least five years of professional experience is 0.75 times the proportion of accountants with no MBA degree and less than 5 years of professional experience.
Based on these data, is it plausible that the proportions of female office workers who often feel abused at work are the same for these countries?
Using the business problem selected ( business, economic or marketing)develop a problem statement which can be addressed with survey research. Prepare a 10-13-question survey to collect primary data regarding your selected problem statement.
According to study done by Nick Wilson of Otago University, the probability a randomly selected individual will not cover his or her mouth when sneezing was 0.267. Suppose you sit on a mall bench and observe 200 people pass by as they sneeze.
Translate each into symbolic form and then use the first thirteen rules of inference to derive the conclusion of each.- With This Ring.
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