1) Find the​ z-scores that separate the middle 81​% of thedistribution from the area in the tails of the standard normaldistribution. STEPS ON HOW TO SOLVE IT IN TI83
2) Assume the random variable X is normally distributed withmean u=5050 and standard deviation sigmaσequals=7.
Compute the probability. Be sure to draw a normal curve with thearea corresponding to the probability shaded.
​P(56 less than or equals≤X less than or equals≤67​). HOW TOENTER IT IN TI 83
