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fish64
08.09.2021 •
Mathematics
Dawn made30quarts of punch for a wedding party. If each glass holds613of a quart, how many glasses of punch can she serve?
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Ответ:
P ( 18-22 or non smokers ) = 0.8508
Step-by-step explanation:
Solution:
- The first step would be to make a table out of the given data given as follows:
Age Group Smokers Non-Smokers Total
18-22 42 144 186
23-30 40 84 124
31-40 21 78 99
- Count the total number of people who are non-smokers or lie in the age group of 18-22 as N:
N = 186 + 84 + 78
N = 348 people.
- The total number of people from which the a random person is selected is T:
T = 186 + 124 + 99
T = 409 people in total.
- Probability of favorable events = (Number of favorable events)/(Total number of events):
P ( 18-22 or non smokers ) = N / T
= 348 / 409
= 0.8508