How to Calculate Standard Deviation for Defective Bolts?

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Homework Help Overview

The discussion revolves around calculating the standard deviation for defective bolts, specifically within a normally distributed set of 400 bolts where the probability of a defective bolt is given as 1/10, leading to a mean of 40 defective bolts.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express uncertainty regarding how to approach the problem, with some indicating they have not yet formulated any attempts at a solution.

Discussion Status

The discussion is in an early stage, with participants acknowledging the need to make an attempt at a solution. There is a recognition of the problem's requirements, but no concrete approaches have been established yet.

Contextual Notes

Some participants note the necessity to adhere to forum rules regarding making an attempt at a solution, which has led to expressions of frustration about their current lack of progress.

moonman239
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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
 
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moonman239 said:
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.
 
Mark44 said:
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.
 
Oooohhhh, wrong title. Argh.
 

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