allybreemany27 allybreemany27

29-05-2020
Mathematics

contestada

PLEASE HELP!
On a standardized exam, the scores are normally distributed with a mean of 155 and a standard deviation of 20. Find the z-score of a person who scored 145 on the exam.

Respuesta :

xplicifire xplicifire

29-05-2020

Answer:

-0.5

Step-by-step explanation:

z-score = (x- mean)/SD

(145-155)/20 = -10/20 = -0.5

Answer Link

Otras preguntas

vamos manana conciento?

Mark invests $4200 in two different accounts. The first account paid 3 %, the second account paid 7 % in interest. At the end of the first year he had earned $1

Astronauts increased in height by an average of approximately 40 mm (about an inch and a half)during theApollo-Soyuzmissions, due to the absence of gravity comp

1.) Analysez les phrases et choisissez celles qui sont vraies. SELECT ALL THAT APPLY Apart from its beautiful beaches and alabaster cliffs, Normandy's is kn

You are buying a can of tomato soup that weighs 8.5 oz. The cost of the can of soup is $0.89. What is the approximate unit price per ounce? $7.57/oz B $0.11/oz

In The Hobbit, was is the point of view in the dialogue?????

50 points!!! Read the excerpt from Animal Farm. As Clover looked down the hillside her eyes filled with tears. If she could have spoken her thoughts, it would h

Write an equation of a line parallel to y =2/3x - 4 that passes through the point (-6, 1). Y=2/3x+5 Y=-2/3x-10 y=-3/2x-8 Y=2/3x-3

A company just began business and made the following four inventory purchases in June: June 1 290 units $1740 June 10 340 units 2016 June 15 340 units 2142 June

if 3 dozen cookies require 1 cup of sugar, write a direct variation equation in two variables that represent this situation. Make sure to define your variables.