SOLUTION: Use the data given in the table below to compute the probability that a randomly chosen voter from the survey will satisfy the following. Round to the nearest hundredth. The voter

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Question 1206967: Use the data given in the table below to compute the probability that a randomly chosen voter from the survey will satisfy the following. Round to the nearest hundredth.
The voter is under 39 years old.

Incorrect: Your answer is incorrect.
Age Republican Democrat Independent Other Total
18 - 28 205 432 98 112 847
29 - 38 311 301 109 83 804
39 - 49 250 251 150 122 773
≥50 272 283 142 107 804
Total 1038 1267 499 424 3228
Found 2 solutions by ikleyn, math_tutor2020:
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.

ANSWER.   = 0.51  (rounded).


Find the numbers 847, 804 and 3228 in the Table and think WHY I choose and used these numbers.


These values are added in the formula because the two sets of interest are disjoint.

Solved.



Answer by math_tutor2020(3817)   (Show Source): You can put this solution on YOUR website!

AgeRepublicanDemocratIndependentOtherTotal
18 - 2820543298112847
29 - 3831130110983804
39 - 49250251150122773
≥50272283142107804
Total103812674994243228


Add up the totals for the age groups "18-28" and "29-38" which represents everyone under 39 years old.
847+804 = 1651

There are 1651 people younger than 39 years of age.

This is out of the 3228 people total in the bottom right corner.

1651/3228 = 0.511462 approximately which rounds to 0.51
This is the approximate probability of selecting a voter under 39 years old.
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