× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
14
o
6
6
G
3
c
3
q
3
m
3
j
3
s
2
b
2
j
2
u
2
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
browniels browniels
wrote...
Go to Answer
Posts: 792
Rep: 0 0
6 years ago
A professor at a local university noted that the grades of her students were normally distributed with a mean of 78 and a standard deviation of 10.
 a. The professor has informed us that 16.6 percent of her students received grades of A. What is the minimum score needed to receive a grade of A?
  b. If 12.1 percent of her students failed the course and received F's, what was the maximum score among those who received an F?
  c. If 33 percent of the students received grades of B or better (i.e., A's and B's), what is the minimum score of those who received a B?
Read 87 times
1 Reply
Replies
Answer verified by a subject expert
KojicoKojico
wrote...
#1
Top Poster
Posts: 1145
Rep: 6 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

browniels Author
wrote...

6 years ago
this is exactly what I needed
Hellish Lover
wrote...

Yesterday
Thank you, thank you, thank you!
sudenzia
wrote...

2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1142 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 267
  
 367
  
 902
Your Opinion
Which is the best fuel for late night cramming?
Votes: 146
Previous poll results: Do you believe in global warming?