Question

Hello, I am struggling with these problems and would appreciate step by step explanations on how to get the answers. I really want to learn and to try to understand this topic. Thank you!

(4 points) For each problem, select the best response.

(a) For a standard Normal distribution, find the approximate proportion of observations less than 1.71.

A. 0.1436
B. 0.9564
C. 0.9064
D. 1.0064
E. 0.0436

(b) For a standard Normal distribution, find the approximate proportion of observations between -0.19 and 0.54.

A. 0.2807
B. 0.8193
C. 0.2307
D. 0.7193
E. 0.3307

(c) For a Normal distribution with mean 1.4 and standard deviation 0.6, 25 percent of the observations are greater than what value?

A. 1.7547
B. 1.8047
C. 1.7807
D. -1.9047
E. 0.90235

(d) For a Normal distribution with mean 180 and standard deviation 5, 39 percent of the observations are less than what value?

A. 214.32
B. 160.74
C. 142.88
D. 196.46
E. 178.6

Answer 1