3 years ago

What’s interval notation of the real numbers from 0 to 25

1 answer:

8 0

25 22223hdhdjdhdndnfndnfn

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Mrrafil [7]

You have the answer correct

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2 years ago

mestny [16]

Try explaining how you worked the problem and how you did it

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3 years ago

zimovet [89]

Answer:

Option D) $275

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $235

Standard Deviation, σ = $20

We are given that the distribution of amount of money spent by students 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 0.975

$P( X < x) = P( z < \displaystyle\frac{x - 235}{20})=0.975$

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

$P( z < 1.960) = 0.975$

$\displaystyle\frac{x - 235}{20} = 1.960\\x =274.2 \approx 275$

Approximately 97.5% of the students spent below $275 on textbook.

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2 years ago

Andrej [43]

Kim is 43 Jordan is 50

200÷4=50
50-7=43

200÷4-7=x

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2 years ago

Nat2105 [25]

1x=7
1x/1=7/1
x=7
this is the answer check it out

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2 years ago