STAT 200: Introduction to Statistics
Final Examination, Fall 2017 OL4
Page 1 of 9
STAT 200
OL4/US2 Sections
Final Exam
Fall 2017
The final exam will be posted at 12:01 am on December 15, and it
is due
STAT 200
WEEK 7 ASSIGNMENT
1. The formula for a regression equation is Y = 2X + 9.
a. What would be the predicted score for a person scoring 6 on X?
y = 2(6) +9
y = 12 + 9
y = 21
b. If someones predic
STAT 200
Week 8 homework
Lane et al. Chapter 15.
Exercise 10.
Df=5-1=4
n=5*6=30
Dfn=30-1=29
Dfe=29-4=25
Exercise 13.
Mean squares is the sum of squares divided by the degrees of freedom.
Illowsky et a
z-SCORES
Frances Chumney, PhD
Overview of z-Scores
Probability & Normal Distribution
Distribution of Sample Means
Z-SCORES
CONTENT OUTLINE
2
Z-SCORES
OVERVIEW OF Z-SCORES
3
4
OVERVIEW OF z-SCORES
o 76
Challenge #2
A lawsuit has been filed against your company by a disgruntled employee. It seems that the bonuses you
awarded were flawed and those who were awarded bonuses based on their high transacti
Homework #3
1) Between a z-score of .27 and the mean
0.1064
2) Between a z-score of 1.07 and the mean
0.3577
3) At or above a z-score of 1.17
0.121
4) At or below a z-score of 1.17
0.8790
5) At or bel
Quiz 1
1. Find the average unemployment number with the data below:
sept 12' - 12,188,000
aug 12' - 12,444,000
jul 12' - 12,694,000
jun 12' - 12,649,000
may 12' - 12,620,000
apr 12' - 12,400,000
mar 1
Challenge #1
Group
(By Last Name)
(1) A H
A
1
B
2
Data Columns
C
D
4
3
E
5
1) Compute the Five-number summary (Min., Q1, Q2, Q3, Max) for the Sales
Column
Minimum: 1095
Q1: 1459.5
Q2: 1966
Q3: 6,418
M
Challenge #3
1. A simple random sample of 50 adults Is obtained and each persons red blood cell count is measured
(in microliters). The sample mean is 5.50. The population standard deviation for red b
EXAM 1
STAT 200
1. The answers to the following questionnaire items are based upon what scale of
measurement? (4 responses)
a) What is your height? Ratio
b) What is your weight? Interval
c) What is yo
Challenge 4
1. Using the data given below, calculate the linear correlation between the two variables x and y.
X
Y
a) .794
0
1
3
7
b) .878
3
2
c) .497
1
5
4
5
d) .543
2. The data below shows the numbe
University of Maryland University College
Stat 2000 (Whealon)
Quiz 1
Directions: Read and sign the academic honesty certification statement below before taking the quiz. Please
show your work for maxi
Week 2 HW
Solutions
Chapter #2
7. For the data from the 1977 Stat. and Biom. 200 class for eye color, construct:
a. pie graph
b. horizontal bar graph
c. vertical bar graph
d. a frequency table with th
Home Work 3
5. The shaded area represents the following probability,
=P(2< x < 5)
7. We know that a continuous probability density is integrated on its whole limit then the resultant value
which is al
Week 4
Home Work Assignment
Lane et al: Chapter 7
8. Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution
with a mean of 71 mph and a standard deviation of 8 m
STAT 200 Final Examination Fall 2015 0L4 Page 7 of 10
Answer:
r m Glam
Work
17 (3, L; -
a leggy-1L5: 12:3_-\S
(5 [3125) 1-3:, 5. \ _ 1503 ECS: 213mg
MO \ wpmh 6 Cocxodxd
Poxxxg 1? 0.5;.)4-36 =
2. The formula for a regression equation is Y = 2X + 9, where Y is the predicted
score.
a. What would be the predicted score for a person scoring 6 on X?
b. If someones predicted score was 14, what wa
(Problem 1) TRUE or FALSE. Explain your answer for full credit. (2 points each, 10 points
total)
(a) In a normal distribution, 68% of the area under the curve is within one standard deviation of
the m
STAT 200: Introduction to Statistics
Final Examination, Fall 2017 OL1
Page 1 of 9
STAT 200
US1/OL1 Sections
Final Exam
Fall 2017
The final exam will be posted at 12:01 am on October 13, and it is
due
Week 4 Homework
.1. Assume the speed of vehicies along a stretch of [10 has an approximately
normal distribution with a mean of 71 mph and a standard deviation of 8 mph.
a. The current speed limit is
STAT 200 Quiz 2
1. The singular form of the word dice is die. Tom was throwing a six-sided die. The
first time he threw, he got a three; the second time he threw, he got a three again. Whats
the proba
Week 7 Homework
1. The formula for a regression equation is Y = 2X + 9.
a. What would be the predicted score for a person scoring 6 on?
y=2(6) +9, y=12+9, y=21
b. If someones predicted score was 14, w
Week 5 Homework
1. Why is a 99% confidence interval wider than a 95% confidence interval? A confidence interval
is a range around a measurement that conveys how precise the measurement is, so with a 9
Week 6 Homework
1. You choose an alpha level of .01 and then analyze your data.
a. What is the probability that you will make a Type I error given that the null hypothesis is true?
.01 or 1%
b. What i
What Would be a Better Solution to Standerdized Testing
Professor: Clover Baker-Brown
COMM 108-33956
Rachelle Allah/Group 4
Rachelle Allah
5/9/2017
Brainstorming of Solution Options
If we dont use sta
Week 8 Homework
1. If an experiment is conducted with 5 conditions and 6 subjects in each
condition, what are dfn and dfe? 5 conditions (K) 6 subjects
N = 5x6 = 30
Degrees of freedom (dfn) = N-1 = 29