Determine the area under the standard normal curve that lies...

Question

Determine the area under the standard normal curve that lies...

 

A. To the left of -2.34 or to the right of 1.645.

B. Between -0.88 and 2.55

C. To the left of -1 or to the right of 2

D. Between 1.48 and 2.82

Answer 1

A. Find the area between -2.34 and  1.645 which is .94038

In order to find area to the left of -2.34 or to the right of 1.645, take 1 - area between -2.34 and 1.645. Can you find the final answer?

 

B. Area to the left of -.88 or to the right of 2.55 is .1948. Area between them is 1- (area to the left of -.88 or to the right of 2.55. Can you find the final answer?

 

C. To the left of -1 or to the right of 2. If the area between them is .8186, What is the area the to left of -1 or to the right of 2?  Can you find the final answer?

 

D. Between 1.48 and 2.82. The area to the left of 2.82 is .9976 and the area to the left of 1.48 is .9306. The area between them is the area of 2.82 minus the area of 1.48.  Can you find the final answer?