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Ronch [10]
3 years ago
9

AYOOO THIS IS A TEST. someone please help me.

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0

Answer:

Step-by-step explanation:

でもうん、彼女はすっごくきれいだ

でもうん、彼女はすっごくきれいだ

でもうん、彼女はすっごくきれいだ

でもうん、彼女はすっごくきれいだ

でもうん、彼女はすっごくきれいだ

でもうん、彼女はすっごくきれいだ

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Every day, Luann walks to the bus stop and the amount of time she will have to wait for the bus is between 0 and 12 minutes, wit
Nana76 [90]

Answer:

a. 341.902.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

n instances of a normal variable:

For n instances of a normal variable, the mean is n\mu and the standard deviation is s = \sigma\sqrt{n}

60 days, for each day, mean 6, variance of 12.

So

\mu = 60*6 = 360

s = \sqrt{12}\sqrt{60} = 26.8328

What is the 25th percentile of her total wait time over the course of 60 days?

X when Z has a p-value of 0.25, so X when Z = -0.675.

Z = \frac{X - \mu}{s}

-0.675 = \frac{X - 360}{26.8328}

X - 360 = -0.675*26.8328

X = 341.902

Thus, the correct answer is given by option A.

3 0
2 years ago
What expressions are equivalent to -2.5 (1 - 2n) - 1.5n?
jok3333 [9.3K]

Answer:

C. -2.5 - 6.5n

Step-by-step explanation:

i just think thats the answer

8 0
3 years ago
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A fish starts swimming at -50m and increases 13m. Which equation best represents the situation and the fish's final elevation? a
marta [7]

Answer:

D)

Step-by-step explanation:

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3 years ago
greg has building blocks.his sister gives him 17 more blocks. he uses 38 blocks to make a tower.how many blocks are not used in
sp2606 [1]
21 blocks, because if he uses 38 you subtract 17 and you get 21

5 0
3 years ago
I need help please asap
lana66690 [7]

Answer:

Part B

How does this change in setting affect Miguel? Choose two answers.

A.

Miguel asks his mom if he can transfer to a different middle school.

B.

Miguel becomes a more focused student.

C.

Miguel begins to struggle in his Language Arts class as well.

D.

Miguel makes a new friend.

Step-by-step explanation:

6 0
3 years ago
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