Math 227 - Statistics » Spring 2023 » 08P Probability Distributions
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Question #1
Find the missing value required to create a probability distribution. Round to the nearest hundredth. x / P(x) 0 / 0.14 1 / 0.15 2 / 0.15 3 / 4 / 0.16
A.
0.8
B.
0.2
C.
0.4
D.
0.6
Question #2
Find the missing value required to create a probability distribution, then find the mean for the given probability distribution. Round to the nearest hundredth. x / P(x) 0 / 0.18 1 / 0.11 2 / 0.04 3 / 4 / 0.01
A.
1.89
B.
2.21
C.
2.45
D.
2.08
Question #3
Find the missing value required to create a probability distribution, then find the standard deviation for the given probability distribution. Round to the nearest hundredth. x / P(x) 0 / 0.04 1 / 2 / 0.02 3 / 0.16 4 / 0.07
A.
1.98
B.
1.68
C.
1.03
D.
1.46
Question #4
A contractor is considering a project that promises a profit of $42,721 with a probability of 0.74. The contractor would lose (due to bad weather, strikes, and such) of $1,064 if the project fails. What is the expected profit? Round to the nearest cent.
A.
29,257.6
B.
37,253.6
C.
31,336.9
D.
35,159.3
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