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: 05:34 PM / Remaining: 60 min. Question 6 A waiter estimates that he makes a tip of $5 on 20% of his tables, $8 on 50% of hi
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Answer #1

(a) Percentage of tables that leave no tip

= 100% - 20% + 50% + 25%

= 100% - 95%

= 5%​​​​​​

(b) P(X)X EV *

Expected value = 0.20×5 + 0.50×8 + 0.25×14

= 1 + 4 + 3.5

= $8.5

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