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Jacob is writing a paper for a machine learning conference. He has invented a "new" version of random forests: to grow each tree of the random forest, he takes a sample of size n with replacement and then uses all features for every step of the tree ?tting, instead of using just √p features. Explain why Jacob's method is not new.
Construct a display showing the average pressure (psi) according to mechanical supplier and electrical/ motor supplier. Which combination of mechani- cal and electrical/motor suppliers seems to result in the highest pressure exertion? The lowe..
Their monitoring plan will take a random sample of 5 days sales per month and use the sample mean sales to identify shops that are under-performing. Establish the lower limit sales such that only 5% of the shops would have a sample sales mean belo..
Shade the bell curve, use the z-table to find the z-score that corresponds to 15%, convert the z-score back to the actual number.
You and your friends have decided to go to The Kentucky Derby. There are 12 horses in the race. How many ways can the horses come in first, second, or third?
State a type I error and describe why it happens. Describe the factor that researcher can control to change type I error. Also, describe how type I errors can be avoided.
Your client has provided you with preliminary data to examine. You have a sample of 20 cases reported by two different offices of the telephone company.
find the mean and standard deviation for the normal distribution where 50 of the data falls between 73.25 and 86.75.
Do prices appear to be the same in the four markets? Explain.- Does the presence of any outliers affect your overall conclusions about prices in the four markets?
Create a 10- to 17-slide presentation, with speaker notes, on the topic of science and the detective. Include the following in your presentation:
a researcher wanted to know if students who do not plan to apply for financial aid had more variability in sat math
What is the probability that an improperly adjusted machine will produce five or more items before it is stopped? What is the average number of items an improperly adjusted machine will produce before being stopped?
What is the distribution of the number who listen to streamed music daily? Explain your answer.- What is the probability that at least 8 of the 20 listen to streamed music daily?
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