document.write( "Question 1172792: A machine produce 10% defective bolts. 400 bolts produced by the machine are
\n" ); document.write( "randomly selected. What is the probability that:\r
\n" ); document.write( "\n" ); document.write( "(a) 65 or more bolts are defective
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\n" ); document.write( "(d) At most 60 bolts are defective
\n" ); document.write( "(e) Between 40 and 60 bolts are defective \n" ); document.write( "

Algebra.Com's Answer #797904 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi 
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document.write( " Binomial Distribution
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document.write( "p(def) = .10 and n = 400
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document.write( "Using Calculator:
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document.write( "(a) 65 or more bolts are defective
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document.write( "P(x ≥ 65) = 1  -  P(x ≤ 64) = 1 - binomcdf(400,.1,64) = 1 - .9999 = .0001
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document.write( "(b) less than 35 bolts are defective
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document.write( "P(x< 35) = binomcdf(400,.1,34) = .1804
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document.write( "(c) At least 30 bolts are defective
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document.write( "P(x ≥ 30) = 1  -  P(x ≤ 29) = 1 - binomcdf(400,.1,29) = 1 - .0357 = .9643
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document.write( "(d) At most 60 bolts are defective
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document.write( "P(x ≤ 60) = binomcdf(400,.1,60) = .9994
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document.write( "(e) Between 40 and 60 bolts are defective
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document.write( "P(x ≤ 40) = .542
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document.write( "P = .9994 - .542 = 
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document.write( "P =  .9994 - .542 = .4574
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document.write( "Stattrek.com  has calculators You may check YOUR answers with
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document.write( "Wish You the Best in your Studies.\r
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