Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

MAT 112 Worksheet - Probability Distributions and Normal Distribution - Prof. Brad A. Emmo, Study Guides, Projects, Research of Statistics

A worksheet for a mathematics (mat) 112 class, focusing on probability distributions and normal distribution. It includes various problems related to finding areas under the standard normal distribution, converting x-values to z-values, and calculating probabilities of normally distributed continuous random variables. A real-life example using data from a 2002 study on college student debt is also provided.

Typology: Study Guides, Projects, Research

Pre 2010

Uploaded on 08/18/2009

koofers-user-rlv
koofers-user-rlv 🇺🇸

10 documents

1 / 2

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
MAT 112 Worksheet
Wednesday, October 22, 2008
1. Find the area under the standard normal distribution between
(a) z=.25 and z= 1.34
(b) z=.32 and z= 1.27
(c) z=1.23 and z= 0
(d) z=2.21 and z=1.14
(e) z= 1.21 and z= 2.41
2. Let xbe a normally distributed continuous random variable with µ= 14 and σ= 3.
(a) Convert x= 21 to a z-value
(b) Convert x= 12 to a z-value
(c) Convert x= 16 to a z-value
pf2

Partial preview of the text

Download MAT 112 Worksheet - Probability Distributions and Normal Distribution - Prof. Brad A. Emmo and more Study Guides, Projects, Research Statistics in PDF only on Docsity!

1. Find the area under the standard normal distribution betweenMAT 112 Worksheet^ Wednesday, October 22, 2008

(a) z = −.25 and z = 1. 34 (b) z = .32 and z = 1. 27 (c) z = − 1 .23 and z = 0 (d) z = − 2 .21 and z = − 1. 14 (e) z = 1.21 and z = 2. 41

  1. Let(a) Convert x be a normally distributed continuous random variable with x = 21 to a z-value μ = 14 and σ = 3.

(b) Convert x = 12 to a z-value (c) Convert x = 16 to a z-value

  1. Let(a) Find x be a normally distributed continuous random variable with P (22 < x < 32) μ = 22 and σ = 7.

(b) Find P (10 < x < 22) (c) Find P (16 < x < 25) (d) Find P (24 < x < 30) (e) Find P (9 < x < 18)

  1. According to a 2002 study by the State Public Interest Research Group’s Higher Education Project,the average debt of graduating college seniors was $16Assuming that these data are normally distributed. , 928, with a standard deviation of $2, 521. (a) Find the probability that a randomly selected college student has debt between $18$20, 000. , 000 and (b) Find the probability that a randomly selected college students has debt less that $12, 000.