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Area between z scores?

  • Thread starter moonman239
  • Start date
  • #1
282
0
1. The problem statement,
The probability of a defective bolt is 1/10. Find the standard deviation of defective bolts of a normally distributed set of 400 bolts.
and given/known data
Mean = 40 bolts
2. The attempt at a solution
None
 

Answers and Replies

  • #2
33,646
5,315
1. The problem statement,
The probability of a defective bolt is 1/10. Find the standard deviation of defective bolts of a normally distributed set of 400 bolts.
and given/known data
Mean = 40 bolts
2. The attempt at a solution
None
Per the forum rules, you must make an attempt at a solution.
 
  • #3
282
0
Per the forum rules, you must make an attempt at a solution.
I can't even think of one, but I'll post one as soon as I can.
 
  • #4
282
0
Oooohhhh, wrong title. Argh.
 

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