Business Math (11th Edition)
11th Edition
ISBN: 9780134496436
Author: Cheryl Cleaves, Margie Hobbs, Jeffrey Noble
Publisher: PEARSON
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Chapter 4, Problem 9CT
To determine
The advantages and disadvantages of online banking.
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Spam filters are built on principles similar to those used in logistic regression. We fit a probability that each message is spam or not spam. We have several variables for each email. Here are a few: to_multiple=1 if there are multiple recipients, winner=1 if the word 'winner' appears in the subject line, format=1 if the email is poorly formatted, re_subj=1 if "re" appears in the subject line. A logistic model was fit to a dataset with the following output:
Estimate
SE
Z
Pr(>|Z|)
(Intercept)
-0.8161
0.086
-9.4895
0
to_multiple
-2.5651
0.3052
-8.4047
0
winner
1.5801
0.3156
5.0067
0
format
-0.1528
0.1136
-1.3451
0.1786
re_subj
-2.8401
0.363
-7.824
0
(a) Write down the model using the coefficients from the model fit.log_odds(spam) = -0.8161 + -2.5651 + to_multiple + 1.5801 winner + -0.1528 format + -2.8401 re_subj(b) Suppose we have an observation where to_multiple=0, winner=1, format=0, and re_subj=0. What is the predicted probability that this message is spam?…
Consider an event X comprised of three outcomes whose probabilities are 9/18, 1/18,and 6/18.
Compute the probability of the complement of the event.
Question content area bottom
Part 1
A.1/2
B.2/18
C.16/18
D.16/3
I need help making sure that I explain this part accutartly.
Chapter 4 Solutions
Business Math (11th Edition)
Ch. 4.1 - Prob. 1-1SCCh. 4.1 - Prob. 1-2SCCh. 4.1 - Prob. 1-3SCCh. 4.1 - Prob. 1-4SCCh. 4.1 - Prob. 1-5SCCh. 4.1 - Prob. 2-1SCCh. 4.1 - Prob. 2-2SCCh. 4.1 - Prob. 2-3SCCh. 4.1 - Prob. 2-4SCCh. 4.1 - Prob. 1SE
Ch. 4.1 - Prob. 2SECh. 4.1 - Prob. 3SECh. 4.1 - Prob. 4SECh. 4.1 - Prob. 5SECh. 4.1 - Prob. 6SECh. 4.1 - Prob. 7SECh. 4.1 - Prob. 8SECh. 4.1 - Prob. 9SECh. 4.1 - Prob. 10SECh. 4.1 - Prob. 11SECh. 4.1 - Prob. 12SECh. 4.2 - Prob. 1-1SCCh. 4.2 - Prob. 1-2SCCh. 4.2 - Prob. 1-3SCCh. 4.2 - Prob. 1-4SCCh. 4.2 - Prob. 1-5SCCh. 4.2 - Prob. 1-6SCCh. 4.2 - Prob. 1-7SCCh. 4.2 - Prob. 1-8SCCh. 4.2 - Prob. 1-10SCCh. 4.2 - Prob. 1SECh. 4.2 - Prob. 2SECh. 4.2 - Prob. 3SECh. 4.2 - Prob. 4SECh. 4.2 - Prob. 5SECh. 4 - Prob. 1ESCh. 4 - Prob. 2ESCh. 4 - Prob. 3ESCh. 4 - Prob. 4ESCh. 4 - Prob. 5ESCh. 4 - Prob. 6ESCh. 4 - Prob. 7ESCh. 4 - Prob. 8ESCh. 4 - Prob. 9ESCh. 4 - Prob. 10ESCh. 4 - Prob. 11ESCh. 4 - Prob. 12ESCh. 4 - Prob. 13ESCh. 4 - Prob. 14ESCh. 4 - Prob. 15ESCh. 4 - Prob. 16ESCh. 4 - Prob. 17ESCh. 4 - Prob. 18ESCh. 4 - Prob. 19ESCh. 4 - Prob. 20ESCh. 4 - Prob. 21ESCh. 4 - Prob. 22ESCh. 4 - Prob. 23ESCh. 4 - Prob. 24ESCh. 4 - Prob. 25ESCh. 4 - Prob. 26ESCh. 4 - Prob. 27ESCh. 4 - Prob. 28ESCh. 4 - Prob. 29ESCh. 4 - Prob. 30ESCh. 4 - Prob. 1PTCh. 4 - Prob. 2PTCh. 4 - Prob. 3PTCh. 4 - Prob. 4PTCh. 4 - Prob. 5PTCh. 4 - Prob. 6PTCh. 4 - Prob. 7PTCh. 4 - Prob. 8PTCh. 4 - Prob. 9PTCh. 4 - Prob. 10PTCh. 4 - Prob. 11PTCh. 4 - Prob. 1CTCh. 4 - Prob. 2CTCh. 4 - Prob. 3CTCh. 4 - Prob. 4CTCh. 4 - Prob. 5CTCh. 4 - Prob. 6CTCh. 4 - Prob. 7CTCh. 4 - Prob. 8CTCh. 4 - Prob. 9CTCh. 4 - Prob. 10CTCh. 4 - Prob. 1CPCh. 4 - Prob. 2CPCh. 4 - Prob. 1CS1Ch. 4 - Prob. 2CS1Ch. 4 - Prob. 3CS1Ch. 4 - Prob. 4CS1Ch. 4 - Prob. 1CS2Ch. 4 - Prob. 2CS2Ch. 4 - Prob. 3CS2Ch. 4 - Prob. 4CS2
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