Math 186 Takehome problem 1, 2012 Due: Monday September 10, 2012 1. The following are this years salaries (in thousands of dollars) for 21 employees from BBraun Medical Inc. For your convenience, the data has been ordered. 27 34 35 36 36 38 41 42 42 45 46
Homework Chapter 8
2.
A. Continuous
B. Discrete
C. Continuous
D. Discrete
E. Discrete
10. The probability that x = 30 is .10
14.
A. P(X) = P(X = 0 or X = 1 or X = 2)
= P(X = 0) + P(X = 1) + P(X = 2)
= .14 + .37 + .29 = .80
B. P(X = 1) or P(X = 2) = P(X =
Lab Activity #2
September 10, 2014
Math 186
#1 Car and truck speeds at a particular location have approximately a bell-shaped distribution
with mean = 65 mph and standard deviation = 5 mph.
For parts a-c, uses the empirical rule to fill in the blanks in e
Lab Activity #6
October 8, 2014
Math 186
#1 In a Stat 200 class at PSU, students were asked to rate how much they liked various kinds of music on
a scale of 1 (dont like at all) to 6 (like very much). Following are probability distributions for ratings of
Lab Activity #7
October 22, 2014
Math 186
#1 For each characteristic, explain whether the random variable is continuous or discrete. If it is discrete,
indicate whether it may be a binomial random variable or not.
a. The number of left-handed individuals
Lab Activity #3
September 17, 2014
Math 186
#1 Consider the following data (counts) for the relationship between number of ear piercings
and whether a student has a tattoo for 1014 Penn State male students.
Ear Pierces
No tattoo
Tattoo
Total
0
699
68
767
2-way Tables, Row/Column Percents, and
x2
Tests
In this lab, we will begin by reviewing some data summaries for categorical variables that we did
at the end of the Summaries of Data lab. Well create 2-way tables and generate row and column
percentages to
z-scores and Empirical Rule &
Regression, Correlation and Scatterplots
We will begin this activity with some practice using the concepts of z-scores and the
Empirical Rule. This will be short. The bulk of the activity will be dedicated to
examining relati
Math 186 Sect 01/03 - Quiz 1 Review
Sections: 2.1, 2.2, 2.3, 2.4
I. Scatterplot:
Displays the relationship between two quantitative variables.
Explanatory variable (x ) explains or causes change in response variable (y )
Examine a scatterplot: Overall
Math 186 Sect 01/03 - Quiz 1 Review
Sections: 2.1, 2.2, 2.3, 2.4
I. Scatterplot:
Displays the relationship between two quantitative variables.
Explanatory variable (x ) explains or causes change in response variable (y )
Examine a scatterplot: Overall
REVIEW SHEET 1 SOLUTION KEY
Sample Problems
1. Identify the following variables as either categorical (C) or quantitative (Q).
(a) Todays high temperature reading at the airport: Q
(b) A students Major: C
(c) The number of Pages in your Statistics textboo
Math 186 - Quiz 2 Review Problems:
Sections covered: 4.2, 4.3, and 4.5
#1) (Modified from problem 4.131 in the text):
12 percent of US women have breast cancer. There is a screening test that is positive with
the probability of 0.9 if a woman carries brea
Math 186 - Quiz 2 Review Problems:
Sections covered: 4.2, 4.3, and 4.5
#1) (Modified from problem 4.131 in the text):
12 percent of US women have breast cancer. There is a screening test that is positive with
the probability of 0.9 if a woman carries brea
REVIEW SHEET FOR EXAM 2
Exam 2 will cover Chapters 3 and 4. In particular, Sections 3.1-3.3 of Chapter 3, and Sections 4.1-4.5
of Chapter 4. Main topics are:
Producing Data (Chapter 3)
1. Experimental design. What are the Key principles? Can you give exam
Math 186
Takehome5: Fall 2012
(Write neatly and legibly)
Due on Friday: November 16th. No late HW will be accepted.
The rst three problems are from the text: Introduction to the Practice of Statistics, 7th edition, By David Moore,
George McCabe and Bruce
Math 186
Takehome problem 7, 2012
Monday October 22, 2012
1. As a member of the Student/Faculty Curriculum Review Committee at your
college, you have been asked to organize a survey on the attitudes of
undergraduate students towards the colleges commitmen
Math 186 Quiz 5 Review Problems:
Sections Covered: 5.1, 5.2, and 5.3
1. Which of the following can be used to show a cause-and-effect relationship
between two variables?
A)
B)
C)
D)
E)
A census
A controlled experiment
An observational study
A sample surve
PAULIUS ZALYS 1
Laboratory Assignment: Sample Evaluations (October 5, 2016)
Group members: Dave Cress, Emma Stierhoff, Jake Cobleigh, Scott Silver, Paulius Zalys.
Question 1: Is there a correlation between expected grades and student satisfaction?
Null Hy
Chapter 2
Quantitative variable, numeric variables vs qualitative variables which are non-numeric variables.
Sample data, are collected when measurements are taken from a subset of a population.
Population data, are collected when all individuals in popul