A bag contains 40 marbles, 4 of which are blue, 10 are red, 25 are green, and 1 is purple. Shawna takes a marble out of the bag, records the color, and returns it to the bag. How many green marbles should she expect after 400 trials?

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A bag contains 40 marbles, 4 of which are blue, 10 are red, 25 are green, and 1 is purple. Shawna takes a marble out of the bag, records the color, and returns it to the bag. How many green marbles should she expect after 400 trials?

Mathematics
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the experimental frequency to get a green marble is: 25/40= 5/8 so the requested number is: \[\Large \frac{5}{8} \cdot 400 = ...?\]
640?

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hint: \[\Large \frac{5}{8} \cdot 400 = \frac{{5 \cdot 400}}{8} = ...?\]
\[\frac{ 2000 }{ 8 }\]= 25
more precisely it is 250
ok
Can u help me with 3 more?
yes!
here the experimental probability, is given by the subsequent ration: favorable outcomes/total outcomes: \[\Large \frac{{272}}{{600}} = ...?\]
ratio*
2.205
whereas the theoretical probability is: favorable outcomes (= 3, since there are three odd numbers) / possible outcomes(=6, since there are six possible outcomes): \[\Large \frac{3}{6} = ...?\]
2?
ohhh 1/2 duhhhh
we have: 272/600=0.453 and 3/6=0.5 so what can you conclude?
soit is not likely
we can see that experimental probability is less than the relative frequency
ok Next one ill start a new page...
ok!

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