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3. A production line manufactures 1000 ohms resistors that must satisfy a 10% tolerance.
a. If a resistance is adequately described by a Gaussian random variable for which mean = 1000; and standard deviation = 40;, what fraction of the resistance expected to be rejected?
b. If a machine is not properly adjusted, the product resistances changes, the case where mean= 1050; (5% shift). What fraction is now rejected?
4. At a certain military installation six similar radars are placed in operation. It is known that radar's probability of failing to operate before 500 hours of "on" time have accumulated is 0.06. What are the probabilities that, before 500 hours have elapsed, (a) all will operate, (b) all will fail, and (c) only one will fail?
Suppose that the probability of strong demand is 0.8 and the probability of weak demand is 0.2. What is the optimal decision using the expected value approach?
A dean of a business school claims that the Graduate Management Admission Test (GMAT) scores of applicants to the school's MBA program have increased during the past 5 years.
estimate the means of the populations from which samples were drawnavoid the assumption of homogeneity of
He received a score of 70 on a biology test for which the class mean was 70 with standard deviation of 4. On which test did he do better relative to the rest of the class?
According to the data from the College Entrance Examination Board, scores on the SAT-I test have a mean of 1017, and Q1 is 880.
we have b 18 times 109 bits that need to be sent over a channel which has a constant but random rate r bitssecond with
a student survey was done to study the relationship between gender and favorite television program watched on sunday
Charmers' Candy Store sells wrapped hard candies in the following flavors: strawberry, blueberry, lemon, lime, and orange. They advertise that there are equal proportions of each flavor in every size of their candy boxes.
Of the nine members of the board of trustees of a college, five agree with president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability that at least two of them would agree with..
Is there evidence that the waiting time at this particular restaurant is less than 3.7 minutes? Use a 1% level of significance. What is your conclusion?
A scatter plot and regression line can be used for all of the following EXCEPT
let xy be uniformly distibuted on the triangle generated by the points 00 10 and 01. more formally the joing pdf is
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