.The number of major software failures of an update to the PearOS ranges from 0 to 5 and has the following probability distribution, where p(x) is the probability mass function, and F(x) is the cumulative distribution. x 0 1 2 3 4 5 p(x) .20 a .21 .15 .11 .02 F(x) .20 .51 b .87 .98 1 a. If p is the probability mass function for x, then evaluate a. b. If F is the cumulative distribution function of x, then what is the value of b? c. What is the expected value of x?
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
.The number of major software failures of an update to the PearOS ranges from 0 to 5 and has the following
| x | 0 | 1 | 2 | 3 | 4 | 5 |
| p(x) | .20 | a | .21 | .15 | .11 | .02 |
| F(x) | .20 | .51 | b | .87 | .98 | 1 |
a. If p is the probability mass function for x, then evaluate a.
b. If F is the cumulative distribution function of x, then what is the value of b?
c. What is the
d. Calculate the variance of x.
e. Calculate the expected value of
f. The PearOS is updated 3 times. Assuming independence between updates, what is the probability the total number of errors on the 3 updates is 0. (i.e., no errors)
g. The PearOS is updated 3 times. Assuming independence between updates, what is the probability the total number of errors on the 3 updates is 1. (i.e., 1 total error)
h. The PearOS is updated 3 times. Assuming independence between updates, what is the probability the total number of errors on the 3 updates is no more than 1.
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