Question 525398
That question is asking, for a normal curve with *[tex \mu = 0] and *[tex \sigma = 1], what is the probability that the z-score is between 1.22 and 2.15. Use your calculator and the normal cdf (cumulative distribution function) to evaluate it. On a TI calculator, it might look something like


normcdf(1.22, 2.15, 0, 1)


The syntax might be slightly different on other calculators.