QUESTION 1
·
1/1 POINTS
Which of the following tables shows a valid probability density function? Select all
correct answers.
That is correct!
•
x P(X=x)
0 0.37
1 0.06
2 0.01
3 0.56
•
•
x P(X=x)
0 38
1 38
2 14
•
•
x P(X=x)
0 25
1 310
2 310
3 310
•
,•
x P(X=x)
0 18
1 18
2 18
3 38
4 14
•
•
x P(X=x)
0 0.03
1 0.01
2 0.61
3 0.31
4 0.21
•
•
x P(X=x)
0 110
1 310
2 45
3 −15
•
Answer Explanation
Correct answer:
x P(X=x)
0 0.37
, 1 0.06
2 0.01
3 0.56
x P(X=x)
0 38
1 38
2 14
x P(X=x)
0 18
1 18
2 18
3 38
4 14
Remember that a valid probability density function has all of its probabilities
between 0 and 1, inclusive, and the sum of the probabilities equal 1.
FEEDBACK
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Content attribution- Opens a dialog
QUESTION 2
·
1/1 POINTS
On average, Colby has noticed that 21 trains pass by his house daily (24 hours) on the
nearby train tracks. What is the probability that at most 6 trains will pass his house in
a 12-hour time period? (Round your answer to three decimal places.)
That is correct!
$$.102
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