The standardized normal distribution a General Procedure As you might suspect from the formula for the normal density function, it would be difficult and
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closely by an appropriate normal (or Gaussian, bell) curve formula • These probabilities can then be found “normal tables”
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formula to evaluate probabilities for the normal distribution Instead, we use the table of cumulative probabilities for the standard normal distribution
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standard normal distribution, which has mean 0 and variance 1, We know that the normal probability density function f(x) is given by the formula
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calculating areas under the curve of the probability density function But for the mean of the normal distribution and a is its standard deviation
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TI Calculator Steps: Caluclating area under the standard normal curve between a and b 1 Press 2nd then, VARS keys to access the DISTR (distributions) menu
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standard normal distribution (see below) • Properties: Normal table: Since there exists no "explicit” formula for 0(x) (the integral repre-
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where µ = 0 and ? = 1 using following equation, Z =X ? µ ? We introduce normal distributions by first looking at another continuous probability
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