keishadawson
22.09.2019 •
Mathematics
What's the formula for area of a triangle
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Ответ:
Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia
Ответ:
0.43.
Step-by-step explanation:
The probability that the customer will pay with debit card = 50%
The percentage of customers who use coupons 30% and 35% pay with debit card.
Now calculate the probability that the same person will use coupon:
P[Uses coupons | Pays with Debit card] = P[Uses coupons and pays with debit card] / P[ Pays with debit card]
= 0.3 * 0.5 / 0.35
= 3/7 or 0.4286 or 42.86%