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irga5000 [103]
3 years ago
15

If the population mean payment time is 19.5 days, what is the probability of observing a sample mean payment time of 65 invoices

less than or equal to 18.1077 days?
Mathematics
1 answer:
Maksim231197 [3]3 years ago
5 0

Answer: P(mean x<18.1077) = P(z< -2.67) = 0.0038

Step-by-step explanation:

Value of Z for 18.1077 = (18.1077 - 19.5)/0.5209 = -2.67

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