Probability and Distribution

Question

Suppose Z  follows the standard normal distribution. Use the calculator provided, or this table, to determine the value of c so that the following is true.

= P(Z > c ) = 0.1170

Round your answer to two decimal places.

Answer 1

Well kiddo, the table was an empty link, the calculator not provided, BUT have no fear, The Internet is Here.

Using the following on-line calculator for inverse standardized normal distribution (i.e. given a probability, find the z value)

https://onlinestatbook.com/2/calculators/inverse_normal_dist.html

we can get an answer by entering the Area under the curve (i.e. the probability ) as 0.1170 and checking the 'Above' radio button since we want Z > c

The default mean is of course 0 for the Standardized Normal Distribution. Standard Deviation (sd) is 1. The variance is also one but only because variance = sd² and 1 squared is 1.

That is it .