document.write( "Question 369917: Suppose a candy manufacturer claims that 20% of a particular candy it makes is orange. You purchase a package and find that the package has thirteen pieces in it. a. Find the mean and standard deviation for the number of orange candies in each package of thirteen.
\n" ); document.write( "b. Using the probability outcome, comment on whether it would be unusual to find no orange candies in your package of thirteen.
\n" ); document.write( "c.Using the values of the mean and standard deviation, comment on whether it would be unusual to find no orange candies in your package of thirteen.
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Algebra.Com's Answer #263743 by Fombitz(32388)\"\" \"About 
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a) \"P%28Orange%29=0.2\"
\n" ); document.write( "Let's look at the probabilities for 13 pieces.
\n" ); document.write( "\"P%280%29=+++1%2A%280.2%29%5E0%2A%280.8%29%5E13=0.054976\"
\n" ); document.write( "\"P%281%29=++13%2A%280.2%29%5E1%2A%280.8%29%5E13=0.178671\"
\n" ); document.write( "\"P%282%29=++78%2A%280.2%29%5E2%2A%280.8%29%5E13=0.268006\"
\n" ); document.write( "\"P%283%29=+286%2A%280.2%29%5E3%2A%280.8%29%5E13=0.245672\"
\n" ); document.write( "\"P%284%29=+715%2A%280.2%29%5E4%2A%280.8%29%5E13=0.153545\"
\n" ); document.write( "\"P%285%29=1287%2A%280.2%29%5E5%2A%280.8%29%5E13=0.069095\"
\n" ); document.write( "\"P%286%29=1716%2A%280.2%29%5E6%2A%280.8%29%5E13=0.023032\"
\n" ); document.write( "\"P%287%29=1716%2A%280.2%29%5E7%2A%280.8%29%5E13=0.005758\"
\n" ); document.write( "\"P%288%29=1287%2A%280.2%29%5E8%2A%280.8%29%5E13=0.00108\"
\n" ); document.write( "\"P%289%29=+715%2A%280.2%29%5E9%2A%280.8%29%5E13=0.00015\"
\n" ); document.write( "\"P%2810%29=286%2A%280.2%29%5E10%2A%280.8%29%5E13=0.000015\"
\n" ); document.write( "\"P%2811%29=+78%2A%280.2%29%5E11%2A%280.8%29%5E13=0.000001022\"
\n" ); document.write( "\"P%2812%29=+13%2A%280.2%29%5E12%2A%280.8%29%5E13=0.000000043\"
\n" ); document.write( "\"P%2813%29=++1%2A%280.2%29%5E13%2A%280.8%29%5E13=0.000000001\"
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\n" ); document.write( "\"mu=sum%28x%2AP%28x%29%2Ci=0%2C13%29\"
\n" ); document.write( "\"mu=2.6\"
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\n" ); document.write( "\"VAR=sum%28%28x-mu%29%5E2%2AP%28x%29%2Ci=0%2C13%29\"
\n" ); document.write( "\"VAR=2.08\"
\n" ); document.write( "\"sigma=sqrt%28VAR%29\"
\n" ); document.write( "\"sigma=1.44\"
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\n" ); document.write( "b) You'd expect to find between 2 and 3 orange candies in the package although zero is within 2 standard deviations of the mean, so it's not a very rare occasion.\r
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