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Sagot :
Answer:
C. She could spin a spinner divided into five equal sections three times. On the spinner, four sections represent customers who buy goldfish and one section represents customers who do not buy goldfish.
Step-by-step explanation:
We are told that four out of five customers who bought pets chose goldfish.
Thus;
P(those who bought pets also chose gold fish) = 4/5
Therefore;
P(those who bought pets but do not buy gold fish) = 1 - (4/5) = 1/5
Now, she wants to know the estimated probability that three randomly selected customers buying pets would not buy goldfish.
The probability we have is 1/5.
Therefore,to accommodate the 3 randomly selected customers, we have to multiply the numerator and denominator for each probability by 3.
Thus;
P(those who bought pets also chose gold fish) = 4/5 × 3/3 = 12/15
P(those who bought pets but do not buy gold fish) = 1/5 × 3/3 = 3/15
Looking at the new probabilities, the simulation she can use is to divide a spinner into five equal sections three times so that for each section, we can have the probability of 1/5 and 4/5.
Thus, option C is correct.
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