document.write( "Question 1173826: what is the z-score of x, when x= 4 X ~ N(12,5)? \r
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document.write( "round to nearest hundredth \n" );
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Algebra.Com's Answer #850716 by CPhill(1959)![]() ![]() You can put this solution on YOUR website! Here's how to calculate the z-score:\r \n" ); document.write( "\n" ); document.write( "* **Understanding Z-score:** A z-score tells you how many standard deviations a data point is from the mean of a distribution. \n" ); document.write( "* **Formula:** z = (x - μ) / σ \n" ); document.write( " * Where: \n" ); document.write( " * x = the data point (4 in this case) \n" ); document.write( " * μ = the mean of the distribution (12) \n" ); document.write( " * σ = the standard deviation of the distribution (5)\r \n" ); document.write( "\n" ); document.write( "* **Calculation:** \n" ); document.write( " * z = (4 - 12) / 5 \n" ); document.write( " * z = -8 / 5 \n" ); document.write( " * z = -1.6\r \n" ); document.write( "\n" ); document.write( "* **Result:** The z-score is -1.60. \n" ); document.write( " \n" ); document.write( " |