2 years ago

PLEASE ANSWER + BRAINLIEST!!!!

Mathematics

1 answer:

Nookie1986 [14]2 years ago

8 0

Plug in 6 for x and solve out for f(x)

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Given that a random variable X is normally distributed with a mean of 2 and a variance of 4, find the value of x such that P(X &

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Given that a random variable X is normally distributed with a mean of 2 and a variance of 4, find the value of x such that P(X < x)=0.99 using the cumulative standard normal distribution table

Answer:

6.642

Step-by-step explanation:

Given that mean = 2

standard deviation = 2

Let X be the random Variable

Then X $\sim$ N(n, $\sigma$ )

X $\sim$ N(2,2)

By Central limit theorem;

$z = \dfrac{X - \mu}{\sigma} \sim N(0,1)$

$z = \dfrac{X - 2}{2} \sim N(0,1)$

P(X<x) = 0.09

$P(Z < \dfrac{X-\mu}{\sigma })= 0.99$

$P(Z < \dfrac{X-2}{2})= 0.99$

P(X < x) = 0.99

$P(\dfrac{X-2}{2}< \dfrac{X-2}{2})=0.99$

$P(Z< \dfrac{X-2}{2})=0.99$

$\phi ( \dfrac{X-2}{2})=0.99$

$( \dfrac{X-2}{2})= \phi^{-1} (0.99)$

$( \dfrac{X-2}{2})= 2.321$

X -2 = 2.321 × 2

X -2 = 4.642

X = 4.642 +2

X = 6.642

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3 years ago

I NEED HELP ASAP ILL GIVE 15 POINTS

tresset_1 [31]

Answer:

its B

Step-by-step explanation:

because one u put them together the dont go no other way hoped i helped

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2 years ago

Which numerator makes the statement true enter the correct answer in the box 1/4<5/12< /6?

Harlamova29_29 [7]

Answer:

3/6

Step-by-step explanation:

1/4 is less than 5/12

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1/4 is also less than 3/6

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nasty-shy [4]

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This is the leineae making it a because it’s cubic

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