Let the random variable x denote the number of burglaries reported to a police department in...
- Let the random variable x denote the number of burglaries reported to a police department in a given day. Use the following probability distribution to answer the following questions.
|
x |
P(x) |
xP(x) |
x2P(x) |
|
0 |
0.48 |
0 |
0 |
|
1 |
0.39 |
0.39 |
0.39 |
|
2 |
0.10 |
0.20 |
0.40 |
|
3 |
0.02 |
0.06 |
0.18 |
|
4 |
0.01 |
0.04 |
0.64 |
|
Total |
1 |
∑[xP(x)] = 0.69 |
∑[x2P(x)]= 1.61 |
- What is the probability that three burglaries are reported in a day?
P(x = 3) =
- Is it unusual for no burglaries to be reported in a day? Why or why not?
- What is the probability that more than two burglaries are reported?
P(x > 2) = ________
- What is the probability that at most three burglaries are reported?
P(x ≤ 3) = ________
Homework Answers
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Let the random variable x denote the number of burglaries
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A police department reports that the probabilities that a X burglaries will be reported in a...
A police department reports that the probabilities that a X burglaries will be reported in a given day are given below. Find the standard deviation for the probability distribution. Round answer to the nearest hundredth A) B) 1.3 ơ 0.67 C) D) None of These P(X) 0 | 9.805e -6 1 0.0004430 20.008011 0.07239 40.3271 5| 0.5918 What is the standard deviation for this probability distribution?
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1. find the probability
2. what is the mean of robberies occur on a given day,
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3. what is the standard deviation you found in the last
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A police department reports that the probabilities that a X burglaries will be reported in a given day are given below. Find the standard deviation for the probability distribution. Round answer to the nearest hundredth A) B) 1.3 ơ 0.67 C) D) None of These P(X) 0 | 9.805e -6 1 0.0004430 20.008011 0.07239 40.3271 5| 0.5918 What is the standard deviation for this probability distribution?
1. find the probability
2. what is the mean of robberies occur on a given day,
u.
3. what is the standard deviation you found in the last
problem?
A police department reports that the probabilities that 0, 1, 2, and 3 burglaries will be reported in a given day are 0.48, 0.35,0.13, and 0.04, respectively. ܢܙ x|P(X = x) 0 .48 .35 2 .13 3 .04
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