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Change the units. In the previous exercise bots were given in thousands and spam messages per day were recorded in billions. In Exercise 4.8 you created a data set using the actual values. For example, Srizbi has 315,000 bots and generates 60,000,000,000 spam messages per day.
(a) Find the correlation between bots and spam messages using this data set.
(b) Compare this correlation with the one that you computed in the previous exercise.
(c) What can you say in general about the effect of changing units in this way on the size of the correlation?
a team of experts is examining the reliability of lie dector tests. to determine the probability that a lie detector
In an area having sandy soil, 50 small trees of a certain type were planted, and another 50 trees were planted in an area having clay soil. Let X = the number of trees planted in sandy soil that survive 1 year and Y = the number of tree..
the metropolitan area of los angeles-long beach california is the area expected to show the largest increase in the
most video games have several difficulty settings from easy to hard many of these have very colorful names. a video
You are given the sample mean and the sample deviation, Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider?
Dotties Tax Service specializes in federal tax returns for professional clients, such as physicians, dentists, accountants, and lawyers.
Interpret the sign of each of the regression coef?cients given in the table. For EI/predicted BMR, data values ranged between 1.4 and 2.8 with a low value associated with underreporting of energy intake.
Calculate the value of Cpk for each of the corkproduction processes described in the previous exercise, and comment. c. How do Cp and Cpk compare, and when are they equal?
retired workers and disabled workers both receive social security benefits. what information would we need to test the
What is the relative risk between exposure to the drug and malformations and what type of study design is this?
What proportion of traveler arrive at airport more thatn 73.6 minutes before the bus leaves?
If the specification limits are 430 ± 30, what conclusions can you draw regarding the ability of the process toproduce items within these specifications?
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