cnrisura cognato 11/19/17 4:36 PM Homework: Lesson 5, Section 5.3 Homework Score

Question

cnrisura cognato 11/19/17 4:36 PM Homework: Lesson 5, Section 5.3 Homework Score: 0 of 1 pt 5.3.19 Find the indicated z-score shown in the graph to the right Click to view page 1 of the table Save 401500 complete) HW Score: 0%, 0 of 5 pts Question Help Area - 0.7190 The z-score is Round to two decimal places as needed.) s Enter your answer in the answer box and then click Check Answer o All parts showing Clear All Check Answer This course (MATH 1016-01 Fall 2017) is based on Larson: Elementary Statistics: Picturing the World, 6e 4948 19

Explanation / Answer

The total area under the standard normal curve = 1

Given that , P(Z > z) = 0.7190

Here we want to calculate the Z score value corresponding to the shaded region

P(Z > z) = 0.7190

The Total area left of Z is P(Z < z)

i.e. P(Z < z) = 1 - 0.7190 = 0.281

The standard normal table gives the probabilities of left sided region.

So, find this probability 0.281 in the Z table

we get Z score = -0.58 ...........( From Z table)

OR By using excel command =NORMSINV(probability)

  =NORMSINV(0.281)

= -0.58 ...........( Answer)

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