Cory is a bird-watcher. He estimates that 30% of the birds he sees are American robins, 20% are dark-eyed juncos, and 20% are so
ng sparrows. He designs a simulation. Let 0, 1, and 2 represent American robins Let 3 and 4 represent dark-eyed juncos. Let 5 and 6 represent song sparrows. Let 7, 8, and 9 represent other birds The table shows the simulation results. According to the simulation, what is the probability that at least one of the next five birds he sees is a song sparrow?
A.)0.35
B.)0.2
C0.65
D.)0.5
A.)0.35
B.)0.2
C0.65
D.)0.5
1 answer:
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Answer:
Step-by-step explanation:
For Mr Rowley,
Ratio of Number of home works to the number of exit tickets =
=
= 6:7
For Ms Rivera,
Ratio of Number of home works to the number of exit tickets =
=
= 6:7
Since, both the ratios are same, fractions will be proportional.
Keep in mind that, when the logarithm base is not explicitly written, base 10 is assumed, therefore,
