Erma maintains an active blog about her seashell collection. She has 500 white shells, 325 yellow shells, 15 pink shells, and 60 green shells in her jar. She asks Sweet T to reach into her jar of seashells and randomly select a shell. Then she replaces it and shakes up the jar before asking Sweet T to pick another shell. If Sweet T repets this 200 times, about how many shells can he expect to be greer?

Question

Karley Waters

Mathematics

17 May, 00:44

Erma maintains an active blog about her seashell collection. She has 500 white shells, 325 yellow shells, 15 pink shells, and 60 green shells in her jar. She asks Sweet T to reach into her jar of seashells and randomly select a shell. Then she replaces it and shakes up the jar before asking Sweet T to pick another shell. If Sweet T repets this 200 times, about how many shells can he expect to be greer?

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Emerson Griffith · Answer 1

She should expect to get about 13 green shells.

There are 900 shells in total. 60 of them are green. This is about 6.67%.

To find the expect value out of 200, just multiply the percent by 200.

0.0667 x 200 is about 13.