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Automated manufacturing operations are quite precise but still vary, often with distribution that are close to...

Automated manufacturing operations are quite precise but still vary, often with distribution that are close to Normal. The width in inches of slots cut by a milling machine follows approximately the N(0.64,0.0009)N(0.64,0.0009) distribution. The specifications allow slot widths between 0.63980.6398 and 0.64020.6402. What proportion of slots meet these specifications?

Answer as a percent.

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Answer #1

P(z<Z) table :

Standard Normal Probabilities Standard Normal Probabilities Table ency is the area under the standard normal curve Table entr

N(0.64,0.0009)

mean = 0.64

SD = 0.0009

P( 0.6398 < x < 0.6402) :4 = 0.64, 0 = 0.0009 We need to compute Pr(0.6398 < X < 0.6402). The corresponding z-values needed to be computed are: Z - X1

P( 0.6398 < x < 0.6402) = 0.1759 = 17.59%

P( 0.6398 < x < 0.6402) = 17.59%

(please UPVOTE)

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