Question 646174
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Hi,
mean tax for the year 2011 was $3,000. Assume the standard deviation is $410
Using TI-83 Calculator to Probability Distribution Values Normal
Press 2nd VARS [DISTR].Scroll down to 2:normalcdf and Press ENTER.
Enter data and Press ENTER.
 P(x < 2900 or > 3200) = 1 - P(2900 &#8804; x &#8804; 3200)
                       = 1- normalcdf(2900, 3200, 3000, 410)