Question
In: Statistics and Probability
Consider the Toluca data (it is in the le named Toluca.txt). Use R to do the...
Consider the Toluca data (it is in the le named Toluca.txt). Use
R to do the following.
(a) Read the data and t a linear model. Print the ANOVA
table.
(b) Compute 92% con dence interval for b0 and b1 using the
appropriate R com-
mand.
(c) Test the hypothesis H0 : b1 = 0 vs Ha : b1 =/= 0 with level =
.05. What is
the p-value.
(d) Can you create a con dence interval for the mean amount of time
to produce
a batch with Lot.Size = 85. What would it be if Lot.Size= 50. What
about
when Lot.Size = 150. Compute the width of each interval. Comment
on
their widths.
(e) Tomorrow the factory decides to produce a batch of size 85.
Compute a 97%
prediction interval for the time it will take to produce that
batch.
(Data)Toluca.txt
Lot.Size Work.Hours
80 399
30 121
50 221
90 376
70 361
60 224
120 546
80 352
100 353
50 157
40 160
70 252
90 389
20 113
110 435
100 420
30 212
50 268
90 377
110 421
30 273
90 468
40 244
80 342
70 323
Solutions
orchestra answered 2 years agoRelated Solutions
(1) Read in the data and create an R data frame named tennis.dfr that has the...
(1) Read in the data and create an R data frame named tennis.dfr
that has the following names for its columns: first.name, last.name,
major.match.wins, major.match.losses, overall.match.wins,
overall.match.losses, major.titles, overall.titles. (Note that the
data file has several explanatory lines before the real data begin
that should be skipped when reading in the data lines.)
NOTE: For the file name, you must use the following web address (URL):
"http://people.stat.sc.edu/hitchcock/tennisplayers2018.txt".
Please do not have your code read in the file from your own...
Use R studio to do this problem. This problem uses the wblake data set in the...
Use R studio to do this problem. This problem uses the wblake
data set in the alr4 package. This data set includes samples of
small mouth bass collected in West Bearskin Lake, Minnesota, in
1991. Interest is in predicting length with age. Finish this
problem without using Im()
(a) Compute the regression of length on age, and report the
estimates, their standard errors, the value of the coefficient of
determination, and the estimate of variance. Write a sentence or
two...
USE R STUDIO. Consider the pressure data frame. There are two columns: temperature and pressure: •...
USE R STUDIO.
Consider the pressure data frame. There are two columns:
temperature and pressure:
• Construct a scatterplot with pressure on the vertical axis and
temperature on the horizontal axis.
• The graph of the following function passes through the plotted
points reasonably well: y = (0.168 + 0.007 ∗ x) ^(20/3). Recall
that the differences between the pressure values predicted by the
curve (i.e. y) and the observed pressure values (i.e. the pressure
values obtained from the data...
Please use R to do it. Using the SATGPA data set in Stat2Data package. Test by...
Please use R to do it.
Using the SATGPA data set in Stat2Data package. Test by using α=
.05
Question: Test if the proportion of MathSAT greater than
VerbalSAT is 0.60
> library(Stat2Data)
> data("SATGPA")
> data(SATGPA)
> SATGPA
In R, Use library(MASS) to access the data sets for this test. Use the Pima.tr data...
In R, Use library(MASS) to access the data sets for this test.
Use the Pima.tr data set to answer questions 1-5.
What is the average age for women in this data set?
What is the maximum number of pregnancies for women in this data
set ?
What is the median age for women who have diabetes?
What is the median age for women who do not have diabetes?
What is the third quartile of the skin variable?
Consider the data contained in the Excel worksheet named Cell Phones. This data set contains monthly...
Consider the data contained in the Excel worksheet named Cell
Phones. This data set contains monthly phone bills (in dollars) for
a random sample of 50 cell phone users.
a. Use the data set to conduct a one sample t-test to determine
whether the expected bill amount equals $65 or is greater than $65.
What is the p-value associated with the test?
b. Construct a 95% confidence interval on expected bill
amount.
c. Do the data provide sufficient evidence to...
Write R commands for below queries, assume the data is in file named input.csv. Also explain...
Write R commands for below queries, assume the data is
in file named input.csv.
Also explain your answer
id
name
salary
start_date
dept
1
Rick
623.3
1/01/2012
IT
2
Dan
515.2
23/09/2013
Operations
3
Michelle
611
15/11/2014
IT
4
Ryan
729
11/05/2014
HR
5
Gary
843.25
27/03/2015
Finance
6
Nina
578
21/05/2013
IT
7
Simon
632.8
30/07/2013
Operations
8
Guru
722.5
17/06/2014
Finance
Open the file and Get the max salary from data frame
Get the detail of person having...
D. The data le TreeAgeDiamSugarMaple.txt is available at the same site as the other data sets...
D. The data le TreeAgeDiamSugarMaple.txt is available at the
same site as the other data sets you have used in the homework
assignments. The data are from 27 maple trees. The rst column of
the le is x=tree diameter and the second column is y=tree age (in
years). Do the following for these data:
(i) Determine a good polynomial regression model for this data
using the AIC and/or BIC criteria. (Fit all polynomial regression
models upto a maximum degree of...
Use the data set named Store_Visits located in the folder Data Files for HW Assignment (outside...
Use the data set named Store_Visits located in the folder Data
Files for HW Assignment (outside of Minitab folder) in the K-drive.
The response variable y is the number of visits of a customer to a
particular food store in a large suburban area within the period of
a month, and the independent variable x is the distance (in miles)
of the customer’s home to the store.
Fit a simple linear regression model to the data, and answer the
following...
Use the data set named Store_Visits located in the folder Data Files for HW Assignment (outside...
Use the data set named Store_Visits located in the folder Data
Files for HW Assignment (outside of Minitab folder) in the K-drive.
The response variable y is the number of visits of a customer to a
particular food store in a large suburban area within the period of
a month, and the independent variable x is the distance (in miles)
of the customer’s home to the store.
Fit a simple linear regression model to the data, and answer the
following...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Search the Internet to find (at least 2 websites) related to the general field of malware....
- Consider the following schema: Suppliers(sid, sname, address) Parts(pid, pname, color) Catalog(sid, pid, cost) write the following...
- Singh Development Co. is deciding whether to proceed with Project X. The cost would be $12...
- CS2123 Data Structures - Fall 2019 Assignment 1: Function Runtimes Table Due 9/11/19 by 11:59pm Completing...
- Question 2. Design a 16-1 MUX using any number of lower MUXs, such as 8-1 or...
- . Write a function that takes, as arguments, two objects, value1 and value2. If
- Wii Brothers, a game manufacturer, has a new idea for an adventure game. It can market...
ADVERTISEMENT