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The file P03.xlsx lists monthly data since 1950 on the well-known Dow Jones Industrial Average (DJIA), as well as the less well-known Dow Jones Transportation Average (DJTA) and Dow Jones Utilities Average (DJUA). Each of these is an index based on 20 to 30 leading companies (which change over time).
the u. s. national highway traffic safety administration gathers data concerning the causes of highway crashes where at
Problem 1: We shall prove in class next time that An ↑ A implies limn→∞ P(An) = P(A). Use this fact to prove that An ↓ A implies limn→∞ P(An) = P(A). [Hint: De Morgan might be of help.]
random variable Y that has an exponential distribution with mean equal to 4 tons. The cost of the flour is proportional to U=3Y+1. Find the probability density function for U.
question 1 as part of his review for a chemistry test a student randomly selects without replacement 40 out of 102
water is pumped from a lake through an 8-in pipe at a rate of 10 ft3s. if viscous effects are negligible what is the
a study seeks to determine the effect of temperature on the heart rate of pythons. data are as followstemperature c 4
An assembly line turns out 10% deffectives. Determine an acceptance number and sampling plan for samples of size 14 and a producers risk of 3%. (AQL = 10)).
find the margin of error for mumew if x-bar 50 n 16 s 12 and c
A square yard of carpet is examined for surface defects. Currently, the process produces an average of 2.4 defects per square yard. What is the probability of finding 2 or more surface defects in the sample.
CCI is unable to adjust the mean of the filling process. However, it is able to adjust the standard deviation of the filling process.
Illustrate what can we say about the probability distribution. Is it approximately normal, elucidate the mean and standard deviation.
Nintendo Sony would like to test the hypothesis that a difference exists in the average age of users of a Wii, a PlayStation, or an Xbox console game. The following data represent the age of a random sample of Wii, PlayStation, and Xbox users.
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