MATH 221 Statistics for Decision Making
Week 4 iLab
Name: _Jose Lopez_
MATH221
Statistical Concepts:
Probability
Binomial Probability Distribution
Calculating Binomial Probabilities
Open a new Excel worksheet.
1.
2.
3.
4.
5.
Open spreadsheet
In cell A1
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Cardenas, Virginia
Math 221, Week 2 iLab, 1/19/2016
Math 221, Dr. Jalali, 1/19/2016
MATH 221 Statistics for Decision Making
Week 2 iLab
Creating Graphs
1. Create a pie chart for the variable Car Color: Select the column with the Car variable,
including th
Math 221 Statistics: Week 1 Notes (Chapters 1 and 2)
Chapter 1: Intro to Statistics
1.1 An Overview of Statistics
A. Data- Consist of information coming from observations, counts, measurements,
or responses.
1.
People who eat three daily servings of whole
Statistics Lab Week 2
Name: _Sean Delgado_
Math221
Statistical Concepts:
Using MINITAB
Graphics
Shapes of Distributions
Descriptive Statistics
Empirical Rule
Data in MINITAB
MINITAB is a powerful, yet user-friendly, data analysis software package. Y
Week - 7
Hypothesis Testing
Hypothesis Tests
Hypothesis test
A process that uses sample statistics to test a claim
about the value of a population parameter.
For example: An automobile manufacturer
advertises that its new hybrid car has a mean
mileage o
6
Week - 6
Confidence Intervals
Section 6.1
Confidence Intervals for the Mean
(Large Samples)
Section 6.1 Objectives
Find a point estimate and a margin of error
Construct and interpret confidence intervals for the
population mean
Determine the minimum
Week-2
(Chapter 9)
Correlation
Outline
Correlation
Linear Regression
Measures of Regression and Prediction
Intervals
Multiple Regression
Correlation
Relationship between two variables.
Age and height
Income and expenses
Data can be represented by
Week 5
Normal Distribution
Random Variable
A random variable is a variable that assumes numerical
values associated with the random outcomes of an
experiment, where one (and only one) numerical value is
assigned to each sample point.
Discrete Random Va
Week 4
Binomial, Geometric and Poisson
Experiments
Random Variables
Random Variable
Represents a numerical value associated with
each outcome of a probability distribution.
Denoted by x
Examples
x = Number of sales calls a salesperson makes in
one day
Percentiles & Z-scores
Name _
PercentileZScores.tns
Class _
A normal curve is a density curve that is symmetric,
single-peaked and bell-shaped. In addition, the
screenshot at the right shows the percentage of data
that falls within 1, 2, and 3 standard de
Math 221 Quiz Review for Weeks 5 and 6 1. 2. Find the area under the standard normal curve between z = 1.6 and z = 2.6. A business wants to estimate the true mean annual income of its customers. It randomly samples 220 of its customers. The mean annual in
Math 221 - Statistics Practice Quiz Week 2 This quiz review covers materials from Weeks 1 and 2. Your quiz will be in Week 3 located in the Quiz Tab. Your quiz will mostly comprise of multiple choice, true/false, and essay questions. The answers are at th
Math 221 Quiz Review for Weeks 3 and 4 1. 2. State whether the variable is discrete or continuous. The # of keys on each student's key chain. Decide whether the experiment is a binomial experiment. Explain why by citing the properties of binomial experime
Statistics Lab Week 4
Name: Nicole Turpin
MATH221
Statistical Concepts:
Probability
Binomial Probability Distribution
Calculating Binomial Probabilities
Open a new MINITAB worksheet.
We are interested in a binomial experiment with 10 trials. First, we
Statistics Lab Week 2
Name: Nicole Turpin
Math221
Statistical Concepts:
Using MINITAB
Graphics
Shapes of Distributions
Descriptive Statistics
Empirical Rule
Data in MINITAB
MINITAB is a powerful, yet user-friendly, data analysis software package. You
During its first month of operation, the Rawls Repair Corporation, which specializes in bicycle repairs,
completed the following transactions:
Oct. 1
Began business by making a deposit in a company bank account of $12,000, in exchange
for 1,200 shares of
1. Suppose Mary deposits $200 at the end of each month for 30 years into an account that
pays 5% interest compounded monthly.
a. How much total money will she have in the account at the end?
R=200, i=.05/12, n=30 x 12=360
S=R (1+i)n - 1) / i = 200(1+.05/1
1. Simplify the following algebraic operations:
a) 7x 2(x-2) + 5(x+3)
7x-2x +4 +5x + 15
=10x+19
b) (x+2)(x-4) + 3x + 1
X^2-4x+2x-8+3x+1
X^2-2x+3x8+1
X^2+x-7
2. Suppose a student has earned the following grades on her first four quizzes: 83, 72, 89, 78. Wh
1. Find the x- and y-intercepts for the line given by the equation 3x + 2y = 12
3x + 2(0) = 12
Simplify to 3x = 12
Divide by 3 to get
x=4
x-intercept is x = 4
3(0) + 2y = 12
Simplify to 2y = 12
Divide by 2 to get
y=6
y-intercept is y = 6.
Thus, the line 3