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3 years ago

A store sees 120 customers in 8 hours. What is the unit rate ( in customers per hour)?

Mathematics

2 answers:

N76 [4]3 years ago

8 0

Answer:

15 per hour

Step-by-step explanation:

120 people / 8 hours = 15 peeps per hour!

Anton [14]3 years ago

6 0

Answer:

15 customers per hour

Step-by-step explanation:

you get the 120 and you divide it by 8 which will give you the answer of 15 that being said, the answer will be a total of 15 customers per hour

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solmaris [256]

when you didve fractions flip the second one over and multiply

so -8/2 divided by 6/-3 will become

-8/2 times -3/6

then multiple straight across so -8 x -3 = 24

over 6 time 2 = 12

so you get 24/12 which equals 2

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Dvinal [7]

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3 years ago

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nydimaria [60]

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3 years ago

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lutik1710 [3]

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3 years ago

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Nookie1986 [14]

The Solution:

Given:

Required:

Find the standard deviation of the probability distribution.

Step 1:

Find the expected value of the probability distribution.

$E(x)=\mu=\sum_{i\mathop{=}0}^3x_iP_(x_i)$ $\begin{gathered} \mu=(0\times0.25)+(1\times0.05)+(2\times0.15)+(3\times0.55) \\ \\ \mu=0+0.05+0.30+1.65=2.0 \end{gathered}$

Step 2:

Find the standard deviation.

$Standard\text{ Deviation}=\sqrt{\sum_{i\mathop{=}0}^3(x_i-\mu)^2P_(x_i)}$ $=(0-2)^2(0.25)+(1-2)^2(0.05)+(2-2)^2(0.15)+(3-2)^2(0.55)$ $=4(0.25)+1(0.05)+0(0.15)+1(0.55)$ $=1+0.05+0+0.55=1.60$

Thus, the standard deviation is 1.60

Answer:

1.60

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1 year ago