document.write( "Question 973725: Heights of men on a baseball team have a bell shaped distribution with a mean of 170 cm and a standard deviation of 7 cm. Using the empirical rule what is the approximate percentage of the men between the following values?
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document.write( "A)____% of the men are between 163cm and 177cm?
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document.write( "B)____% of the men are between 149cm and 191cm?\r
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document.write( "so if i take 163-170= -7/7= -1
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document.write( "177-170=7/7=1\r
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document.write( "149-170=-21/7-3
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document.write( "191-170= 21/7=3\r
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document.write( "Please show the work so I can fully understand how this is done. Thank you!
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document.write( " how do i get the percentages from here? \n" );
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Algebra.Com's Answer #595802 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! You're off to a good start. You have found that if x = 163, then z = -1. Also, if x = 177, then z = +1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The empirical rule states that roughly 68% (shown in blue) of the popluation is between z = -1 and z = +1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( "Source: http://www.nku.edu/~statistics/212_Using_the_Empirical_Rule.htm\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the answer to the blank in part A is 68\r \n" ); document.write( "\n" ); document.write( "---------------------------------------------------------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You also found that if x = 149, then z = -3. If x = 191, then z = +3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Use the same drawing above, but now focus on the 99.7% portion in red. That says 99.7% of the population is within 3 standard deviations of the mean\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the answer to the blank in part A is 99.7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |