Homework 8

1.  Find the missing value required to create a probability distribution. Round to the nearest hundredth.

x / P(x)
0 / 0.04
1 / 0.19
2 / 0.02
3 / 
4 / 0.09

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 / 0.07
1 / 0.16
2 / 0.09
3 / 
4 / 0.2

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 / 0.14
1 / 
2 / 0.18
3 / 0
4 / 0.09

4.   A contractor is considering a project that promises a profit of $10,292 with a probability of 0.68. The contractor would lose (due to bad weather, strikes, and such) of $5,862 if the project fails. What is the expected profit? Round to the nearest cent.

Homework 8 Answers

1.  Find the missing value required to create a probability distribution. Round to the nearest hundredth.

x / P(x)
0 / 0.04
1 / 0.19
2 / 0.02
3 / 
4 / 0.09

Answer

0.66