× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
r
5
m
5
h
5
r
5
t
5
B
5
P
5
s
5
m
5
c
5
c
4
4
Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
New Topic  
NERD NERD
wrote...
Go to Answer
Posts: 805
Rep: 0 0
6 years ago
A manufacturing company has 5 identical machines that produce nails. The probability that a machine will break down on any given day is .1 . Define a random variable X to be the number of machines that will break down in a day.
 a. What is the appropriate probability distribution for X?
  b. Compute the probability that 4 machines will break down.
  c. Compute the probability that at least 4 machines will break down.
  d. What is the expected number of machines that will break down in a day?
  e. What is the variance of the number of machines that will break down in a day?
Read 58 times
1 Reply
Replies
Answer verified by a subject expert
sophiakhalid12sophiakhalid12
wrote...
#1
Top Poster
Posts: 1155
Rep: 4 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

NERD Author
wrote...

6 years ago
Just got PERFECT on my quiz
Hellish Lover
wrote...

Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
nadiia
wrote...

2 hours ago
Thanks for your help!!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  749 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 202
  
 503
  
 161
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 432
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?