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anonymous
 one year ago
The following table shows the data of a random sample of fish collected from and later released into a lake:
How many bass are estimated to be present if a random sample of 1,500 fish is collected from the lake?
Type of Fish Bass Catfish Warmouth
Number of fish 60 70 20
anonymous
 one year ago
The following table shows the data of a random sample of fish collected from and later released into a lake: How many bass are estimated to be present if a random sample of 1,500 fish is collected from the lake? Type of Fish Bass Catfish Warmouth Number of fish 60 70 20

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DanJS
 one year ago
Best ResponseYou've already chosen the best response.0(sample size) * (# bass) / (Total Fish)

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0Take the fraction that are bass, and multiply that by your sample size

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0Ok, in the sample, there are 60 bass and (60+70+20) = 150 total fish

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0the fraction that are bass is 60/150

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then add the total after?

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0If 1500 Fish are sampled, you would expect 40% to be bass

DanJS
 one year ago
Best ResponseYou've already chosen the best response.01500*0.4 = 600 estimated bass

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0This is what we did \[\frac{ 60 }{ 60+70+20 } = \frac{ x }{ 1500 }\]

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0Just scaled up the sample size to 1500 from 150 with the same expectations on percent of bass

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@DanJS how would I come to the total

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0600 would be the answer
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