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Fudgin [204]
2 years ago
13

PLEASE ANSWER ASAP WILL MARK BRAINLIEST

Mathematics
1 answer:
Olin [163]2 years ago
4 0

Answer:

First choice

Step-by-step explanation:

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The heights of baby giraffe are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 100 b
ANEK [815]

Answer:

P(\bar X

And we can solve this using the following z score formula:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And if we use this formula we got:

z = \frac{63-63.6}{\frac{2.5}{\sqrt{100}}}= -2.4

So we can find this probability equivalently like this:

P( Z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

X \sim N(63.6,2.5)  

Where \mu=63.6 and \sigma=2.5

We select n =100. Since the distribution for X is normal then we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

We want this probability:

P(\bar X

And we can solve this using the following z score formula:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And if we use this formula we got:

z = \frac{63-63.6}{\frac{2.5}{\sqrt{100}}}= -2.4

So we can find this probability equivalently like this:

P( Z

4 0
3 years ago
Can someone give me some tips of how to study. I have already tried writing everything in my lesson but it doesn't seem to work
Ainat [17]
Study all notes, reread the chapters again. Have someone ask questions on the chapters page by page. This always has worked for me. Plus try to do this again the night before the test. You will be surprised how much you can remember by doing it again the night before the test. Hope this helps.
8 0
3 years ago
2 and 3 please and show the work too answer quick cuz it’s due tomorrow pls
Svetradugi [14.3K]
722 bricks and 8 workers.
8 0
3 years ago
Which are the roots of the quadratic function f(q) = q2 – 125?
qwelly [4]
The solutions to q² - 125 = 0 are q = ±√125.
  q = -5√5
  q = 5√5
4 0
3 years ago
The following stock prices reflect the closing price for the past five days. Find the 3 day SMA
Masteriza [31]

Answer:

solution

Step-by-step explanation: total=209.75

7 0
2 years ago
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