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Calculating Probability Using Watermelon Candy and Email Surveys
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Employees of a candy company surveyed people of different ages and asked them their favorite flavor of candy. One of the surveyors chooses to send...

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Calculating Probability Using Watermelon Candy and Email Surveys 3 Views


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Description:

Employees of a candy company surveyed people of different ages and asked them their favorite flavor of candy. One of the surveyors chooses to send a follow-up email to one of the survey participants. He chooses from the group of participants between the ages of 12 and 25. What is the probability that the person who receives that email preferred watermelon?


Transcript

00:02

Okay i say t match members We got on the

00:03

chart table thinking for you here lemon orange grape on

00:07

a military may get hungry Alright What is it about

00:10

let's See employees of a candy company surveyed people of

00:13

different ages and asked them there for favorite flavor of

00:18

candy One of the surveyors wants to send a follow

00:21

up spam email thing to a respondent Meaning someone who

00:25

responded to the survey The respondent was between the ages

00:28

of twelve and twenty five So what is the probability

00:31

that the person who receives that email preferred watermelon four

00:36

years All right so let's go up here We're gonna

00:41

look at the ages twelve and twenty five So they

00:43

must mean these two columns and they're asking us probably

00:47

person who's Your watermelon Well let's See we've got ninety

00:50

two and eighty six out of a total of let's

00:54

Say it looks like sixteen sixty six let's Think about

00:56

this So hopefully we get a free piece Candy if

00:59

we get this right Since the surveyor only chose from

01:02

people age twelve through twenty five Yeah these columns or

01:05

the right way to go and find the total number

01:07

Of people in this age range So this will be

01:11

the denominator of the probability expressions We gotta add three

01:15

seventy two and four seventy one So it's not out

01:18

of the total it's just out of this age range

01:20

group here right Well the numerator is the number of

01:23

people who like watermelon but only from those two columns

01:26

and that's that ninety two plus eighty six number So

01:28

that gets us well What is that uh one seventy

01:32

eight over eight forty three it's about point to one

01:35

or twenty one percent Twenty one percent is the probability

01:38

that a person who receives that email preferred watermelon All 00:01:42.193 --> [endTime] right that's it We're not where's our candy

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