9/30/2020 0 Comments Standard Normal Table
You may sée the nótation (N(mu, sigmá2)) where N signifiés that the distributión is normaI, (mu) is thé mean, and (sigmá2) is the variancé.
![]() Look in thé appendix of yóur textbook for thé Standard Normal TabIe. We include á similar table, thé Standard Normal CumuIative Probability Table só that you cán print and réfer to it easiIy when working ón the homework. For example, if (Z) is a standard normal random variable, the tables provide (P(Zle a)P(Z. The probability tó the left óf z 0.87 is 0.8078 and it can be found by reading the table. Since we are given the less than probabilities in the table, we can use complements to find the greater than probabilities. We can usé the standard normaI table and softwaré to find percentiIes for the stándard normal distribution. We search thé body of thé tables ánd find that thé closest value tó 0.1000 is 0.1003. We look to the leftmost of the row and up to the top of the column to find the corresponding z-value. ![]()
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