statistics
posted by Vijay .
A continuously running washing machine receives jolts in a Poisson process at an average rate of 10 jolts per hour. The standard deviation of the number of jolts received in given 20 minute run is equal to

Assume that grades follow a normal distribution (the “bell curve”). It is reasonable to assume
that the mean of this distribution is μ = 75 and the standard variation is ! = 8 .
Respond to this Question
Similar Questions

MATH  probability #2
A rescue squad spokesperson claims that the squad receives an average of 3 calls per hour. If at most 6 calls were received over a 5hour period, would you suspect that the spokesperson was overestimating the average number of calls … 
Statistics
A telephone company receives 3 calls every minute on an average. If an operator has a watch that is not very accurate and which has a normal distribution with mean of 1 minute and standard deviation of 5 seconds, what is the probability … 
business statistics
store manager is doing a study on how to staff his franchise. He knows that the average number of pizzas ordered is 12 per hour with a standard deviation of 1.4 pizzas. Staffed with 3 employees, he can assemble up to 15 pizzas per … 
elementary statistics
The number of calls received by a car towing service averages 21.6 per day (per 24hour period). Find the probability that in a randomly selected hour the number of calls is fewer than 4. What requirement for the Poisson distribution … 
Math
A continuously running washing machine receives jolts in a Poisson process at an average rate of 5 jolts per hour. The probability that it receives no jolts in given 20 minutes run e5,e5/3,e100,e100/3 
Probability and statistics
7. A Continuously running washing machine receives jolts in a Poisson process at an average rate of 5 jolts per hour. The probability that it receives no jolts in given 20 minute run Choose one answer a. e−5 b. e−5/3 c. … 
Statistics
The number of traffic accidents per day on a certain section of highway is thought to be Poisson distributed with a mean equal 2.19. Based on this, how many traffic accidents should be expected during a week long period? 
Statistics
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable  one threedigit number wins $600 and all others win nothing  that gamblers never reach "the long … 
Statistics
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable  one threedigit number wins $600 and all others win nothing  that gamblers never reach "the long … 
Statistics
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable  one threedigit number wins $600 and all others win nothing  that gamblers never reach "the long …