Auttyrain7596

Auttyrain7596

02.08.2021 •

Mathematics

Question 25 of 40 Ventana High School has found that some offerings on the lunch menu are
much more popular than others. The following table displays students'
favorite lunch choices:
187
59
23
Pizza
Tacos
Sub
Sandwiches
Chinese
Combo
Plate
98
What is the estimated population proportion of students who prefer tacos?

Question 25 of 40

Ventana High School has found that some offerings on the lunch menu are
much mo

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Ответ:

alexabdercmur

29.02.2020

Solution :

Case I :

If Collen is late on out of days.

$= \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2}$

$$=\frac{1}{32}$

Case II :

When Collen is late on out of days.

$= \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times ^5C_1$

$=\frac{1}{32} \times 5$

$$=\frac{5}{32}$

Case III :

When Collen was late on out of days.

$= \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times ^5C_2$

$=\frac{1}{32} \times 10$

$$=\frac{5}{16}$

Therefore, the $\text{probability}$ that Collen will arrive late to work no more than $\text{twice}$ during a $\text{five day workweek}$ is :

$=\frac{1}{32} + \frac{5}{32} + \frac{5}{16}$

$=\frac{1}{2}$

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