Question

In a large restaurant, 2 out of every 5 customers ask for water with their meal.

A random sample of 10 customers is selected. Find the probability that

- Exactly 4 ask for water with their meal.

- More than 6 ask for water with their meal.

- The restaurant has bookings for 30 customers on Father’s Day. What is the expected number and variance of customers who ask for water with their meal on this day.

Answer #1

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In a large university, statistics show that 75% of students live
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0.2387
0.0357
0.1621
0.0572
(no excel work)

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