STAT-4604
Homework # 1
Fall 2013
9/9/2013
1. An automobile company analyzes warranty claim data reported by its dealer network to
determine potential design problems with its vehicles.
a. Can warranty data be viewed as a random sample of failures?
a.i. No
If there are n observations in a sample, denoted x1,x2,xn, the sample mean and variance are expressed as and .
If there are a finite number of observations, N, in a population, denoted as x1, x2, xN, the population mean and
variance are expressed as and 2
STAT 4604
Final Formula Sheet
Spring 2013
If there are n observations in a sample, denoted x1,x2,xn, the sample mean and variance are expressed as and .
If there are a finite number of observations, N, in a population, denoted as x1, x2, xN, the populatio
STAT-4604
Second Test Formulas
Standard Normal Distribution Critical Values, Z
Z0.05 = 1.645,
Z0.025 = 1.96,
Z0.01 = 2.33,
Z0.005 = 2.58
Table 1: Summary of Single-Sample Hypothesis Testing Procedures
Case
Null
Hypothesis
Test
Statistic
Alternative
Hypoth
Stat 4604
Exam # 3 Formulas
Fall 2013
Simple linear Regression Estimates & Linear Regression Equations
Table 1: Summary of Hypothesis Testing Procedures for More than Two Samples, Regression
Problem Type
More than Two
Means (CRD)
Linear
Regression
Null
Hy
STAT-4604
Homework # 3
Fall 2013
1. (Section 3.4)The temperature readings from a thermocouple in a furnace fluctuate according to a
cumulative distribution function
Determine the following:
a.
P(800 < X 805)
b. b. P(X > 808)
c. If the specifications for t
3/15/2015
Lecture 3 - 5
The Normal and Other Important Continuous
Distributions
1
Reading Assignment
Section 3-5 Important Continuous
Distributions
3-5.1 Normal Distribution
3-5.2 Lognormal Distribution
3-5.4 Weibull Distribution
2
1
3/15/2015
The Norm