2 years ago

I'll mark branliest !!!

Mathematics

1 answer:

timama [110]2 years ago

8 0

Answer:

option 2

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2^2-28

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=-24

that is it

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At a fast food restaurant, customers are asked if they want to “round up” their bill to the next highest dollar and donat

jarptica [38.1K]

Answer:

(a) 0.1414

(b) 0.1010

Step-by-step explanation:

(a)

The density curve is rectangular in shape.

This implies that the distribution of donations is Uniform.

(b)

Compute the probability of donations at least 85 cents as follows:

$P(X\geq 85)=\int\limits^{99}_{85} {\frac{1}{99-0} \, dx$

$=\frac{1}{99}\times [x]^{99}_{85}\\\\=\frac{99-85}{99}\\\\=0.1414\\\\$

Thus, the proportion of donations that are at least 85 cents is 0.1414.

(b)

Compute the probability of donations between 30 and 40 cents as follows:

$P(30\leq X\leq 40)=\int\limits^{40}_{30} {\frac{1}{99-0}} \, dx$

$=\frac{1}{99}\times [x]^{40}_{30}\\\\=\frac{40-30}{99}\\\\=0.1010$

Thus, the probability of donations between 30 and 40 cents is 0.1010.

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4 years ago