Question

2. Suppose we have a Normal distribution with mean 35 and standard deviation 4. Take a few a. minutes to draw this curve very neatly and accurately. Reference the document "How to Draw a Normal Curve" in this assessment. Use a separate sheet of paper, or add extra space here, and use a straightedge to draw an axis. b. Label your curve from part a with the 68-95-99.7 Rule. c. If we randomly select a value from this Normal model and call that value x, find: i. P(x <30) ii. P(x>30.4) ii. P(33<x<40) Make a note about how you're doing your calculations (Ti-8x, GeoGebra, Excel, etc.) and what you enter. The middle 90% of the Normal curve is between what two values? (We're looking for a symmetric interval here, so 45% is above the mean and 45% below the mean.)

Answer 1

0-14 21 3 303540 4 5O 1525 30 95%(1.- RAde :- (@j (b) G8-95-99.7 6共Ate. Liss te. (45.4, 1 Sd. 옇 68% value.cg, x,un thun 3 5+リ nn an, ns within sd wn 25-12, 35a P2-125) 00 56S 750,4) = P( X-35 P(乙<1.1s)-0.87493 (Z0.5) 0.89435-o-30854ニ0-585e1

"4 Tables, have деда. 0 - 1643 Z 4164

P 3.