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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
Full Transcript
- 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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