document.write( "Question 1142850: The time it takes to assemble an electronic component is normally distributed with a mean of 17.2 minutes and a standard deviation of 3.1 minutes. The probability is 95.05% that it will take at least how long to assemble a component?
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Algebra.Com's Answer #763597 by rothauserc(4718)\"\" \"About 
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1 - 0.9505 = 0.0495
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\n" ); document.write( "according to the table of z-values
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\n" ); document.write( "0.0495 probability is associated with a z-value of -1.65
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\n" ); document.write( "we know that
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\n" ); document.write( "(X - 17.2)/3.1 = -1.65
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\n" ); document.write( "X - 17.2 = 1.65 * 3.1 = -5.115
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\n" ); document.write( "X = -5.115 + 17.2 = 12.085 is approximately 12.1
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\n" ); document.write( "The probability is 95.05% that it will take at least 12.1 minutes to assemble a component
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