LexyV1242
13.07.2019 •
Mathematics
The table below lists chicks that were born to different species of birds. the second column gives the number of those chicks that survived to adulthood. use this table to answer the questions below. chicks chicks that reached adulthood starling 100 15 cardinal 15 3 pigeon 325 45 blackbird 415 50 crow 230 30 what is the probability that a starling chick will reach adulthood? if you randomly pick a blackbird or crow chick, what is the probability it will reach adulthood? which species has chicks with the greatest chance of reaching adulthood? which species has chicks with the least chance of reaching adulthood? the table below lists chicks that were born to different species of birds. the second column gives the number of those chicks that survived to adulthood. use this table to answer the questions below. chicks chicks that reached adulthood starling 100 15 cardinal 15 3 pigeon 325 45 blackbird 415 50 crow 230 30 what is the probability that a starling chick will reach adulthood? if you randomly pick a blackbird or crow chick, what is the probability it will reach adulthood? which species has chicks with the greatest chance of reaching adulthood? which species has chicks with the least chance of reaching adulthood?
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Ответ:
What is the probability that a Starling chick will reach adulthood?
15 out of 100 Starlings reached adulthood so there is a 15/100 probability.
15/100 reduces to 3/20 as a fraction ( 0.15 as a decimal)
If you randomly pick a blackbird or crow chick, what is the probability it will reach adulthood?
Total number of blackbirds and crows = 415 + 230 = 645
Total that reach adulthood = 50 +30 = 80
Probability of reaching adulthood = 80/645, reduces to 16/129 as a fraction
( 0.124 as a decimal)
Which species has chicks with the greatest chance of reaching adulthood?
Starlings = 15/100 = 0.15
Cardinals = 3/15 = 0.2
Pigeons = 45 /325 = 0.138
Blackbirds = 50/415 = 0.12
Crows = 30/230 = 0.13
Cardinals have the highest chance.
Which species has chicks with the least chance of reaching adulthood?
Blackbirds have the lowest chance.
Ответ:
I get the answer 52°