7. If an email message has a probability of 0.2 being spam, and containing word "Hi",and an email message has a probability of 0.3 containing word "Hi", furthermore, anemail message has a probability of 0.4 containing the word "Hi" given that it is spam,which of the following statement(s) is/are true?-(i)(ii)The probability that an email message is spam is 0.5-The probability that an email message is spam given that it contains the word"Hi" is 0.8(ii)The probability that an email message is spam given that it contains the word"Hi" is 2/3e(iv)The probability that an email message is spam is 0.6-(a) (1). (ii)-(b) (1), (iii)(c) (iv), (ii)e(d) (iv), (iii)(e) None of the above8. Which of the following statement(s) on data preparation of data analytics projectlifecycle is/are TRUE?«(i)Data conditioning involves data visualization tools to gain an overview of thedata.(11)Data conditioning involves cleaning data, normalizing datasets, andperforming transformations.Data conditioning involves checking consistency of data distribution.(ii)(iv)Data conditioning involves discerning what data to keep/discard.(a) (i), (iv)e(b) (ii), (iii)(c) (ii), (iv)-(d) All of aboveNone of the above

Q7. p(s) = probability of being spam p(h) = probability of containing hi p(s and h) = 0.2p(h) =…

7. If an email message has a probability of 0.2 being spam, and containing word "Hi", and an email message has a probability of 0.3 containing word "Hi", furthermore, an email message has a probability of 0.4 containing the word "Hi given that it is spam, which of the following statement(s) is/are true?e (i) (1i) The probability that an email message is spam is 0.5- The probability that an email message is spam given that it contains the word "Hi" is 0.8- (iii) The probability that an email message is spam given that it contains the word "Hi" is 2/3e (iv) The probability that an email message is spam is 0.6- (a) ). (ii) (b) (1), (iii)< (c) (iv), (ii)- (d) (iv), (iii)< (e) None of the above

7. If an email message has a probability of 0.2 being spam, and containing word "Hi", and an email message has a probability of 0.3 containing word "Hi", furthermore, an email message has a probability of 0.4 containing the word "Hi given that it is spam, which of the following statement(s) is/are true?e (i) (1i) The probability that an email message is spam is 0.5- The probability that an email message is spam given that it contains the word "Hi" is 0.8- (iii) The probability that an email message is spam given that it contains the word "Hi" is 2/3e (iv) The probability that an email message is spam is 0.6- (a) ). (ii) (b) (1), (iii)< (c) (iv), (ii)- (d) (iv), (iii)< (e) None of the above

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

7. If an email message has a probability of 0.2 being spam, and containing word "Hi",
and an email message has a probability of 0.3 containing word "Hi", furthermore, an
email message has a probability of 0.4 containing the word "Hi" given that it is spam,
which of the following statement(s) is/are true?-
(i)
(ii)
The probability that an email message is spam is 0.5-
The probability that an email message is spam given that it contains the word
"Hi" is 0.8
(ii)
The probability that an email message is spam given that it contains the word
"Hi" is 2/3e
(iv)
The probability that an email message is spam is 0.6-
(a) (1). (ii)-
(b) (1), (iii)
(c) (iv), (ii)e
(d) (iv), (iii)
(e) None of the above
8. Which of the following statement(s) on data preparation of data analytics project
lifecycle is/are TRUE?«
(i)
Data conditioning involves data visualization tools to gain an overview of the
data.
(11)
Data conditioning involves cleaning data, normalizing datasets, and
performing transformations.
Data conditioning involves checking consistency of data distribution.
(ii)
(iv)
Data conditioning involves discerning what data to keep/discard.
(a) (i), (iv)e
(b) (ii), (iii)
(c) (ii), (iv)-
(d) All of above
None of the above

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