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weeeeeb [17]
3 years ago
9

Tuck is 11 years old, and he has a younger

Mathematics
2 answers:
vladimir1956 [14]3 years ago
5 0

Answer:

his brother is 8

Step-by-step explanation:

i did math :)

Marizza181 [45]3 years ago
5 0

Answer:

Tucks brother is 8 years old.

Step-by-step explanation:

2x = 22 - 14= 8

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Step-by-step explanation:

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7 0
2 years ago
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3 years ago
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The temperature of coffee served at a restaurant is normally distributed with an average temperature of 160 degrees Fahrenheit a
posledela

Answer:

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.  

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 160 degrees

Standard Deviation, σ = 5.4 degrees

We are given that the distribution of temperature of coffee is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.2

P( X < x) = P( z < \displaystyle\frac{x - 160}{5.4})=0.2  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 160}{5.4} = -0.842\\\\x = 155.4532  

Thus,

P_{20}=155.4532

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.

7 0
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Step-by-step explanation:

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3 years ago
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