document.write( "Question 266971: plz solve my qustion \r
\n" ); document.write( "\n" ); document.write( "Given a normal distribution with u=40 and variance=6 find the value of x that has (i) 38% of the area below it and (ii) 5% of the area above it.
\n" ); document.write( "chandumer932@hotmail.com\r
\n" ); document.write( "\n" ); document.write( "The definition of Z is number of S ( Standard Deviation) Z= (Xbar-Xi)/S. Z table tells relationship between percent under graph and how many S.
\n" ); document.write( "In this problem given percentage, S square ( Variance =6) and X bar ( u=40)\r
\n" ); document.write( "\n" ); document.write( "So find Z number first, then times square root 6 then minus u.\r
\n" ); document.write( "\n" ); document.write( "Answer is Z*6^0.5-40 \n" ); document.write( "
Algebra.Com's Answer #196047 by stanbon(75887)\"\" \"About 
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plz solve my question
\n" ); document.write( "Given a normal distribution with u=40 and variance=6 find the value of x that has
\n" ); document.write( "(i) 38% of the area below it
\n" ); document.write( "1st: Find the z-value that has 38% to its left.
\n" ); document.write( "invNorm(0.38) = -0.3055
\n" ); document.write( "2nd: use x = zs+u to find your answer:
\n" ); document.write( "x = -0.3055*6 + 40
\n" ); document.write( "x = 38.17
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\n" ); document.write( "\n" ); document.write( "(ii) 5% of the area above it.
\n" ); document.write( "1st: Find the z-value that has 5% above it
\n" ); document.write( "invNorm(0.95) = 1.645
\n" ); document.write( "Then x = 1.645*6+40
\n" ); document.write( "x = 49.87
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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