A project's profit (in thousands), is a random variable with normal distribution. The variance equa to the cube of the mean. The probability of the project loss (negative profit) is 4.01%. The expectation of the profit is: Select one:

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A project's profit (in thousands), is a random variable with normal distribution. The variance equal
to the cube of the mean. The probability of the project loss (negative profit) is 4.01%. The
expectation of the profit is:
Select one:
а. 410.9
b. 282.9
с. 456.5
d. 326.5
е. 371.8
Transcribed Image Text:A project's profit (in thousands), is a random variable with normal distribution. The variance equal to the cube of the mean. The probability of the project loss (negative profit) is 4.01%. The expectation of the profit is: Select one: а. 410.9 b. 282.9 с. 456.5 d. 326.5 е. 371.8
In an exam, 25% got an "B" mark, 15% get a "A", and the other 60% get below that. Six students
from this class are randomly selected.
The expected number of selected students with an "A", given that at least one of the selected
students got a "B" is:
Select one:
a. 0.5567
b. 0.8201
c. 0.5467
d. 0.5359
e. 0.8350
Transcribed Image Text:In an exam, 25% got an "B" mark, 15% get a "A", and the other 60% get below that. Six students from this class are randomly selected. The expected number of selected students with an "A", given that at least one of the selected students got a "B" is: Select one: a. 0.5567 b. 0.8201 c. 0.5467 d. 0.5359 e. 0.8350
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