needthehelp78
15.12.2021 •
Mathematics
A chemical company makes two brands of antifreeze. The first brand is 60% pure antifreeze, and the second brand is 85% pure antifreeze. In order to obtain 170 gallons of a mixture that contains 65% pure antifreeze, how many gallons of each brand of antifreeze must be used?
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Ответ:
0.4834
we are asked for the probability that the z score is greater than 0.95.
to get this, we use subtract 0.4384 from 1:
1 - 0.4384 = 0.5166
so, the answer is the first option