The diameter of your bicycle wheel is 34 inches. What is it’s radius
2 answers:
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Answer:
0.134 = 13.4% probability that a message is spam, given that it contains the word "text" (or "txt")
Step-by-step explanation:
We use the conditional probability formula to solve this question. It is
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Contains the word "text", or "txt".
Event B: Spam message.
The word "text" (or "txt") is contained in of all messages, and in of all spam messages.
This means that
747 of the 5574 total messages () are identified as spam. The word "text" (or "txt") is contained in all of them. So
Then
0.134 = 13.4% probability that a message is spam, given that it contains the word "text" (or "txt")
So, we need to convert the fractions into equivent ones.
So, in order to get the numerator of the first fraction to match the numerator of the second fraction, we must mutltiply it by 2/2
Your first answer is 6.
Then, in order to get the denominator of second fraction to match the other side, you must multiply by 3/3
Your second answer is 3