The random variable x is defined as the number of mistakes made by a typist on a randomly chosen page of a physics thesis. The probability distribution follows.
Round your answer to four decimal places, if necessary.
a. What is E(x)?
______________
b. Find
.
______________
c. Find P(x

Question

The random variable x is defined as the number of mistakes made by a typist on a randomly chosen page of a physics thesis. The probability distribution follows.
  Round your answer to four decimal places, if necessary. 
a. What is E(x)?
______________
b. Find
  .
______________ 
c. Find P(x < 1).
______________
d. Find
  .
______________ 
e. In what fraction of pages in the thesis would the number of mistakes made be within two standard deviations of the mean?
______________

Quizplus · Accepted Answer

The Answer of The random variable x is defined as the number of mistakes made by a typist on a randomly chosen page of a physics thesis. The probability distribution follows.
  Round your answer to four decimal places, if necessary. 
a. What is E(x)?
______________
b. Find
  .
______________ 
c. Find P(x < 1).
______________
d. Find
  .
______________ 
e. In what fraction of pages in the thesis would the number of mistakes made be within two standard deviations of the mean?
______________

The Random Variable X Is Defined as the Number of Mistakes