![JANA279](/avatars/35360.jpg)
JANA279
02.10.2019 •
Mathematics
The number of messages that arrive at a web site is a poisson distributed random variable with a mean of 6 messages per hour. round your answers to four decimal places (e.g. 98.7654). (a) what is the probability that 5 messages are received in 1 hour? (b) what is the probability that 10 messages are received in 1.5 hours? (c) what is the probability that less than 2 messages are received in 1/2 hour?
Solved
Show answers
More tips
- F Food and Cooking How to Make Napoleon Cake: A Step-by-Step Guide...
- H Health and Medicine How to Increase Hemoglobin in the Blood...
- F Food and Cooking How to Make Chebureki: A Delicious Recipe for Russian Street Food...
- S Style and Beauty Ultimate Guide on How to Care for Suede Shoes...
- T Travel and tourism How to Use a Compass: A Beginner s Guide...
- D Dating, Love, Relationships Does a Person s Character Depend on the Color of Their Eyes?...
- F Food and Cooking Is it Really Possible to Cook Tasty Colored Cauliflower?...
- H Health and Medicine Why do our Joints Crack?...
- H Health and Medicine These Food Additives Can Do Significant Harm to Your Health...
- F Food and Cooking How to Choose the Right Olive Oil: A Comprehensive Guide...
Answers on questions: Mathematics
- M Mathematics What is the length of AC? PLEASE HELP...
- M Mathematics What is the answer to the fraction 6 5/8-4 2/9...
- M Mathematics Aseven foot ladder, leaning against a wall, touches the wall x feet above the ground. write an expression (in terms of x) for the distance from the foot of the ladder to...
- M Mathematics What does the law of definite proportions say...
- M Mathematics Interior of a running track has the dimensions shown this area will be planted grass seed one kilogram of grass seed will cover 40 square meters more than 100 kilograms...
- M Mathematics What does the law of multiple proportions say...
- M Mathematics The set of all points in a plane that are a fixed distance from a given point...
- M Mathematics What fraction is equivalent to 5.1? is 5.1 a rational number?...
- M Mathematics The soccer team collected $800 at a car wash fundraiser. they charged $5.00 for small vehicles and $10.00 for larger vehicles. the amount collected can be modeled by the...
- M Mathematics What is the surface area of the triangular prism whose net is shown below? a. 264 cm b. 288 cm c. 249 cm d. 273 cm...
Ответ:
a) There is a 16.0623% probability that 5 messages are received in 1 hour.
b) There is a 11.5880% probability that 10 messages are received in 1.5 hours.
c) There is a 22.4042% probability that 2 messages are received in 0.5 hours.
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
In this problem, we have a mean of 6 messages per hour.
(a) What is the probability that 5 messages are received in 1 hour?
Find the value of P when
and ![\mu = 6](/tpl/images/0281/9848/a06d8.png)
So
There is a 16.0623% probability that 5 messages are received in 1 hour.
(b) What is the probability that 10 messages are received in 1.5 hours?
The mean is 6 messages in one hour.
For 1.5 hours, the mean is 6*1.5 = 9 messages.
So
We have to find the value of P when
and
.
There is a 11.5880% probability that 10 messages are received in 1.5 hours.
(c) What is the probability that less than 2 messages are received in 1/2 hour?
The mean is 6 messages in one hour.
For 0.5 hours, the mean is 6*0.5 = 3 messages.
So
We have to find the value of P when
and
.
There is a 22.4042% probability that 2 messages are received in 0.5 hours.
Ответ:
C
Step-by-step explanation:
gotchu