Question 905925
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Hi,
TI syntax is normalcdf(smaller, larger, µ, &#963;).
Note: The -9999 is used as the smaller value(if unknown) to be at least 5 standard deviations from the mean.
0r
Note: The 9999 is used as the larger value to be at least 5 standard deviations from the mean.
a. P (x &#8805; 75) = normalcdf(75, 9999, 71, 2.3).
b. normalcdf(65, 72, 71, 2.3).
c. invNOrm(.90) = (X-71)/2.3
2.3invNOrm(.90) + 71 = X, How tall an officer has to be to get in that top 10% group