Question

Let X represent the number of errors per 100 lines of source code in a software...

Let X represent the number of errors per 100 lines of source code in a software application. Suppose X has the probability model: ?[? = ?] = { 0.01 ? = 2 0.25 ? = 3 0.40 ? = 4 0.30 ? = 5 0.04 ? = 6 Calculate the variance of X .

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A mail-order computer software business has six telephone lines. Let x denote the number of lines...
A mail-order computer software business has six telephone lines. Let x denote the number of lines in use at a specified time. The probability distribution of x is as follows: X P(x) 0 0.11 1 0.17 2 0.20 3 0.25 4 0.15 5 0.08 6 0.04 Calculate the probability of: (a). at most three lines are in use. (b). fewer than three lines are in use. (c). at least three lines are in use. (d). between two and five lines...
1. Within a computer program, the number of bugs (i.e., coding errors) per lines of code...
1. Within a computer program, the number of bugs (i.e., coding errors) per lines of code has a Poisson distribution with an average of fifteen bugs per 1,000 lines. a. Find the probability that there will be exactly eight bugs in 1,000 lines of code. b. Find the probability that there will be at least eight bugs in 1,000 lines of code. c. Find the probability that there will be at least one bug in 1,000 lines of code. d....
Let random variable X denote the time (in years) it takes to develop a software. Suppose...
Let random variable X denote the time (in years) it takes to develop a software. Suppose that X has the following probability density function: f(x)= 5??4 if 0 ≤ x ≤ 1, and 0 otherwise. b. Write the CDF of the time it takes to develop a software. d. Compute the variance of the number of years it takes to develop a software.
The following scores represent the number of errors made by each person on a verbal learning...
The following scores represent the number of errors made by each person on a verbal learning task. Each person was assigned to one of three study groups Test the hypothesis that the different study groups all produce the same average number of errors. Group              Error Scores Group 1: 16,    7,   19,   24,   31 Group 2: 24,    6,   15,   25,   32, 24, 29 Group 3: 16,   15,   18, 19,   6,     13, 18 1. Calculate ∑X2 2. Calculate (∑x^2)/N also written as...
An accounting office has six incoming telephone lines. Let the random variable X = the number...
An accounting office has six incoming telephone lines. Let the random variable X = the number of busy lines. The probability distribution function for X is given below. x 0 1 2 3 4 5 6 f(x) 0.052 0.154 0.232 0.240 ? 0.105 0.043 (a). Find the Probability that there are 4 busy lines? My Ans: It should be 0.826, (1-sum of others). I'm struggling to answer the rest of them. (b). Find the expected number of busy lines when...
Suppose that for a given computer salesperson, the probability distribution of x = the number of...
Suppose that for a given computer salesperson, the probability distribution of x = the number of systems sold in 1 month is given by the following table. x 1 2 3 4 5 6 7 8 p(x) 0.04 0.10 0.13 0.30 0.30 0.11 0.01 0.01 (a) Find the mean value of x (the mean number of systems sold). Answer= 4.14 (b) Find the variance and standard deviation of x. (Round your standard deviation to four decimal places.) variance = 1.8604...
The data shows the number of weeks employed and the number of errors made per day...
The data shows the number of weeks employed and the number of errors made per day for a sample of assembly line workers. Weeks (x) Errors (y) 1 20 1 18 2 16 4 10 4 8 5 4 6 3 8 1 10 2 11 1 12 0 12 1 Develop a scatter plot.  Describe the relationship between weeks and errors. Use a simple least square regression equation to predict the number of errors. Is there a significant relationship between...
Let X represent the number that occurs when a 6-sided red die is tossed and Y...
Let X represent the number that occurs when a 6-sided red die is tossed and Y the number that occurs when a 6-sided green die is tossed. Find the variance of the random variable 6X-Y.
The following table contains the probability distribution for the number of traffic accidents daily in a...
The following table contains the probability distribution for the number of traffic accidents daily in a small town. Complete parts​ (a) and​ (b) to the right. Number of Accidents Daily​ (X) ​P(X) 0 0.30 0.30 1 0.34 0.34 2 0.17 0.17 3 0.08 0.08 4 0.06 0.06 5 0.04 0.04 6 0.01 0.01 b. Compute the standard deviation. sigma σ equals = nothing ​(Type an integer or decimal rounded to three decimal places as​ needed.)
A business has six customer service telephone lines. Consider the random variable x = number of...
A business has six customer service telephone lines. Consider the random variable x = number of lines in use at a randomly selected time. Suppose that the probability distribution of x is as follows. x 0 1 2 3 4 5 6 0.05 0.10. 0.17 0.41. 0.17 0.07 0.03 Calculate the mean value and standard deviation of x. (Round your standard deviation to four decimal places.) μx= σx= What is the probability that the number of lines in use is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT