document.write( "Question 815320: 1. A ball is drawn at random from a box containing 6 red balls, 4 white balls, and 5 blue balls.
\n" ); document.write( "Determine the probability that the ball drawn is (a) red. (b) white, (c) not red. and (d) red or white.\r
\n" ); document.write( "\n" ); document.write( "2. In a certain high school class, consisting of 60 girls and 40 boys, it is observed that 24 girls and 16 boys wear eye glasses, if a student is picked at random from this class. What is the probability that student picked at random is a boy, what is the probability that a student wears eye glasses?\r
\n" ); document.write( "\n" ); document.write( "3. In a population of 3000 children under 5 , those with malnutrition is 31%, if 5 children are selected randomly what is the probability of:
\n" ); document.write( "a) 3 children with malnutrition
\n" ); document.write( "b) At more 2 are malnourished.\r
\n" ); document.write( "\n" ); document.write( "4. In a sample of 64 students given an examination in statistics, it is found that the mean weight is 57 kg with standard deviation 9 kg. Find :
\n" ); document.write( " i) The proportion of students weight 48-62 kg.
\n" ); document.write( " ii) The proportion of those less than 72 kg.
\n" ); document.write( " iii) The proportion of those less than 50 kg ?
\n" ); document.write( " iv) If the highest 5% of are over-weight, what is the Minimum score for an over-weight.\r
\n" ); document.write( "\n" ); document.write( "5. The mean weight of 500 male students at a certain college is 151 pounds (lb), and the standard deviation is 15 lb. Assuming that the weights are normally distributed, find the probability of students weight
\n" ); document.write( "(a) between 121 and 155 lb
\n" ); document.write( " (b) more than 185 lb.
\n" ); document.write( " c) if 4% of the students are overweight, what is the minimum weight to classify student as over weight?\r
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Algebra.Com's Answer #490863 by Edwin McCravy(20055) $\"\"$ $\"About$

You can put this solution on YOUR website!
1. A ball is drawn at random from a box containing 6 red balls, 4 white balls, and 5 blue balls.
\n" ); document.write( "Determine the probability that the ball drawn is\r
\n" ); document.write( "\n" ); document.write( "(a) red.
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\r\n" );
document.write( "6 ways out of 15 =  = \r\n" );
document.write( "

\n" ); document.write( "(b) white,
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\r\n" );
document.write( "4 ways out of 15 =  \r\n" );
document.write( "

\n" ); document.write( "(c) not red.
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\r\n" );
document.write( "That's the complement of (a), so it's 1 -  = \r\n" );
document.write( "

\n" ); document.write( "(d) red or white.
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\r\n" );
document.write( "10 ways out of 15 =  = \r\n" );
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document.write( "---------------------------------------------------\r\n" );
document.write( "

\n" ); document.write( "5. The mean weight of 500 male students at a certain college is 151 pounds (lb), and the standard deviation is 15 lb. Assuming that the weights are normally distributed, find the probability of students weight
\n" ); document.write( "(a) between 121 and 155 lb
\n" ); document.write( "

\r\n" );
document.write( "TI-83 or 84 calculator under 2ND VARS\r\n" );
document.write( "\r\n" );
document.write( "normalcdf(121,155,151,15)\r\n" );
document.write( "\r\n" );
document.write( ".58238697\r\n" );
document.write( "

\n" ); document.write( "(b) more than 185 lb.
\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "normalcdf(185,99999999,151,15)\r\n" );
document.write( "\r\n" );
document.write( ".0117052622\r\n" );
document.write( "

\n" ); document.write( "(c) if 4% of the students are overweight, what is the minimum weight to classify student as over weight?
\n" ); document.write( "

\r\n" );
document.write( "invNorm(1-.04,151,15)\r\n" );
document.write( "\r\n" );
document.write( "177.2602911\r\n" );
document.write( "\r\n" );
document.write( "Edwin

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