[Answered] What z-score value separates the highest 10 of the scores in a normal distribution from the lowest ...

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storky111

Hero Member
Posts: 561

on: Jun 20, 2018

What z-score value separates the highest 10 of the scores in a normal distribution from the lowest 90?

a. z = 1.28 c. z = 1.28
b. z = 0.25 d. z = 0.25

Question 2

What is the probability of randomly selecting a z-score less than z = 1.25 from a normal distribution?

a. 0.8944 c. 0.3944
b. 0.1056 d. 0.2112

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Marked as best answer by a Subject Expert

carolinefletcherr

Sr. Member
Posts: 313

Reply #1 on: Jun 20, 2018

Answer to Question 1

A

Answer to Question 2

B

storky111

Member
Posts: 561

Reply 2 on: Jun 20, 2018

Excellent

xiazhe

Member
Posts: 331

Reply 3 on: Yesterday

Wow, this really help

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