Latin
Post
South
Africa
<-
c(24,31,7)
c(32,23,4)
c(11,22,26)
c(39,36,20)
tbl
<- cbind(Latin, Post, South, Africa)
chisq.test(tbl)
#
prob2 <- prob2 <- read.table("~/Downloads/prob2.txt", quote="\",
comment.char=")
#Least square regression line
fit <- lm(V1
TakeHome Exam
Revanth
October 16, 2016
1. Loading of Environmental Science & Technology (Jan. 2005) reported on the factors related
to MTBE contamination in public and private New Hampshire wells data.
df <- read.csv("/home/campus23/chappidi/Downloads/Pro
TakeHome Exam
Revanth
October 16, 2016
1. Loading of Environmental Science & Technology (Jan. 2005) reported on the factors
related to MTBE contamination in public and private New Hampshire wells data.
df <- read.csv("/home/campus23/chappidi/Downloads/Pro
Introduction to Statistics, pages 442-448
#3
The scores on a (hypothetical) vocabulary test of a group of 20 year olds and a group of 60 year
olds are shown below.
20 yr olds
27
26
21
24
15
18
17
12
13
60 yr olds
26
29
29
29
27
16
20
27
a. Test the mean d
g Hy €223 lpdf x ‘9 Top-notch homework ‘e x ' - ‘ I I
C [1 file:/'C:lUsers/Nata ie's/‘Downloads/HW%20%23%203.pdf
Problem ll 2 [Total 12 pts]
Harriscnburg Hot Tub Company manufactures two types ofhnt lubs‘ Hydro-Deluxe and
Hydrchupreme. Each HydroeDelu
P 9.1:
Before After
different (After-Before)
2
5
3
4
4
7
9
5
5
8
7
8
t-Test: Paired Two Sample for
Means
Before
Mean
Variance
Observations
Pearson Correlation
Hypothesized Mean Difference
df
t Stat
P(T<=t) one-tail
t Critical one-tail
P(T<=t) two-tail
t C
Problem 2
Ethnic
group 1
Married
Married
Married
Married
Married
Unmarrie
d
Unmarrie
d
Unmarrie
d
Unmarrie
d
Unmarrie
d
Ethnic
group 2
Ethnic
group 3
2.9
3
3.3
3.5
3.7
2.8
2.9
3
3.1
3.4
2.8
3.4
3.7
3.7
3.8
2.2
3.3
2.4
2.6
3.4
2.4
2.8
3.4
2.6
2.8
3.5
2.7
2
1. Five varieties of Barley were grown at 6 different places over the years 1931 1nd
1932. By combining the location and year, we then have twelve Place and Year
combinations, since more interest is in the Variety rather than in the Place or Year.
The dat
Question 1
0 out of 0.25 points
For all numerical responses use FOUR decimals (1.1000)
John parks cars at a hotel. On the average, 6.7 cars will arrive in an hour. Assume that a driver's
decision on whether to let John park the car does not depend upon a
.et f{x.y} = —1.I'36 — x2 — 4332
l. Determine the domain off {write it in set notation], and sketch the domain off.|
1. Determine the range off {write it in set notation], and sketch the range off.
Sketch a contour graph off with at least four level curve
Your Name =>
Today, John borrowed $40,000 from the bank. His initial plan is to pay his entire principal and interest amount in 48 months. He plans to pay some extra payment for the first
year to pay off the debt earlier. As an excel programming trainer,
Problem 1
(a) Construct a stem-and-leaf display for these data
7 |89
8 |017
9 |01244566688
10 | 1 7 9
11 | 2
(b)
From the stem-and-leaf display, it can be seen that the distribution is symmetric with a
range from 78 to 112. There is no outliers. The typic
Task #
1
2
3
4
5
6
7
8
9
10
11
12
Task
Use Freeze Panes to lock the Names on the left, and Fields at the top of the screen
Set up Conditional Formatting to highlight any score higher than the Filter score
How many scores are highlighted if you set the fil
A coffee shop finds that the correlation between daily high temperature and daily sales is -0.74. The
interpretation of this value is as follows:
There is a negative association between temperature and sales: as the temperature falls, sales
tend to increa
Unit 2 Problems Set
NAME:
REMEMBER, these are assessed preparatory problems related to the content of Unit 2. The Unit 2 Exam will consist of similar types of problems, but not exactly the same. Thus,
make sure you are thinking about the concepts and proc
1.
Write a function file that determines the following sum (for all odd n from 1 to 11) using a for
loop:
y=
2n+2
n1
2.
Write a function file that determines the value of n 2 over the range 1 to n. Plot your data on
separate plots in the same window for n
Math 1330
Homework 22 (4.4 identities)
Record your answers to all the problems in the EMCF titled Homework 22.
Establish an identity. Convert the expression on the left to one of the expressions on the right. Each expression
is used only once.
A.
6.
1 sec
Math 1330
Homework 21 (5.1b, 4.4)
The homework problems come from the exercises in Chapter 4 and 5 of the online text. Problem 5.1.26 refers
to problem 26 in Chapter 5, Section 1. Record your answers to these problems in the EMCF titled
Homework 21.
Probl
Math 1330
Homework 7 (8.2a)
Problem 8.2.50 refers to problem 50 in Chapter 8, Section 2 of the online text. Record your
answers to all the problems in the EMCF titled Homework 7.
1.
Problem 8.2.50
A.
x 5 y 5
C.
x2 y 2 5
E.
None of the above
2
2.
x2 y 2 5
Math 1330
Homework 27 (7.2)
The homework problems come from the exercises in Chapter 7 of the online text. Problem 7.2.2 refers to
problem 2 in Chapter 7, Section 2. Record your answers to these problems in the EMCF titled
Homework 27.
Note: Some of the h
Math 1330
Homework 28 (7.3)
The homework problems come from the exercises in Chapter 7 of the online text. Problem 7.3.4 refers to
problem 4 in Chapter 7, Section 3. Record your answers to these problems in the EMCF titled
Homework 28.
Note: Some of the h
Math 1330
Homework 25 (6.3)
The homework problems come from the exercises in Chapter 6 of the online text. Problem 6.3.6 refers to
problem 6 in Chapter 6, Section 3. Record your answers to these problems in the EMCF titled
Homework 25.
Note: For numbers 1
Math 1330
Homework 26 (7.1)
The homework problems come from the exercises in Chapter 7 of the online text. Problem 7.1.4 refers to
problem 4 in Chapter 7, Section 1. Record your answers to these problems in the EMCF titled
Homework 26.
Note: Many of the h