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2. The BPS survey found that 40% of investors use brokerage services with discount coupon. In a random sample of 9 investors, calculate the probabilities:
2. The BPS survey found that 40% of investors use brokerage services with discount coupon. In a random sample of 9 investors, calculate the probabilities:
= 40% n = 9
1. Exactly 2 people used a discount coupon to hire a broker?
2. Exactly 4 people were sampled using a discount coupon?
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