Please help. Need answer

Mathematics

1 answer:

Fittoniya [83]3 years ago

6 0

I'm pretty sure it's B so trust me

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Help with math needed plzz

Alenkinab [10]

Number 1 would be the answer

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X - 10 greater than or equal to -2

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X - 10 >= -2

x will be greater than or equal to 8

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Anticipated consumer demand in a restaurant for free-range steaks next month can be modeled by a normal random variable with mea

QveST [7]

A.
$\mathbb P(X>1000)=\mathbb P\left(\dfrac{X-1200}{100}>\dfrac{1000-1200}{100}\right)=\mathbb P(Z>-2)$

Since about 95% of a normal distribution falls within two standard deviations of the mean, that leaves 5% that lie without, with 2.5% lying to either side.

$\mathbb P(Z>-2)=\mathbb P(|Z|2)=0.95+0.025=0.975$

b.
$\mathbb P(1100$

About 68% of a normal distribution lies within one standard deviation of the mean, so this probability is about 0.68.

c. You're looking for $k$ such that

$\mathbb P(X>k)=0.10$

Since

$\mathbb P(X>k)=\mathbb P\left(\dfrac{X-1200}{100}>\dfrac{k-1200}{100}\right)=\mathbb P(Z>k^*)=0.10$

occurs for $k^*\approx1.2816$ , it follows that

$\dfrac{k-1200}{100}=1.2816\implies k\approx1328$

So there's a probability of 0.10 for having a demand exceeding about 1328 pounds.

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4 years ago

College charges reservation fee of $43 plus $8.40 per hour. Class wants to spend at most $93.40 what is the at most sign

musickatia [10]

Answer:

Step-by-step explanation:

y=mx+b

93.40=8.40x+43

the 93 is the amount we want to get to, 8.40 represents the value of each sign and the 43 is the original cost

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What is the quotient of 5 divided by 1/3

Pachacha [2.7K]

Answer:

Step-by-step explanation:

5 divided by 1/3 is the same as if you flip the denominator meaning 5 x 3 which is 15

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4 years ago

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