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inna [77]
3 years ago
12

Determine

Mathematics
1 answer:
Luden [163]3 years ago
7 0

Answer:

\mu_{x} = 64, \sigma_{x} = 12.83

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu_{x} = \mu and standard deviation \sigma_{x} = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 64, \sigma = 77, n = 36

So

\mu_{x} = 64, \sigma_{x} = \frac{77}{\sqrt{36}} = 12.83

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Choose the correct equation for the line shown on the graph?
fomenos

<u>Answer:</u>

y=-1/4x-1

<u>How to find the </u><u>slope</u>

To find the slope of the line you need to do the change in y/change in x. This is also known as the rise/run. To do this you count the spaces in between the two points.

In this graph the change in y (rise) is 2. The change in x (run) is 8. Since the line is going down they are negative. The rise/run is -2/8. This can be simplified to -1/4.

Slope: -1/4x

<u>How to find the y-intercept</u>

To find the y-intercept, you need to look at where the line crosses y.

In this graph the line crosses y at -1.

Y-intercept: -1

<u>Final</u><u> </u><u>equation</u><u>:</u><u> </u><u>-</u><u>1</u><u>/</u><u>4x-1</u>

3 0
2 years ago
If someone could figure out the top question that would be great, thank you so much!
Maurinko [17]
I think i only get some of it. this is what i did

x = -3 to 4y = 0.3 to 3if we use -3 and 3a < -1 < b
a= -2 to infiniteb= 0 to infinite
5 0
3 years ago
Six friends will stay at a cabin in the woods this weekend. The distance to the cabin is 148.5 miles. Each person will drive one
ivolga24 [154]

Answer:

24.75/24¾

Step-by-step explanation:

148.5 ÷ 6 = 24¾ or 24.75

Answer: Each driver drove 24.75/24¾ miles

5 0
2 years ago
Simplify fully e x e x e x f/ e x e x f x f
mel-nik [20]

Given:

The given expression is

\dfrac{e\times e\times e\times f}{e\times e\times f\times f}

To find:

The simplified form of given expression.

Solution:

We have,

\dfrac{e\times e\times e\times f}{e\times e\times f\times f}

The common factors in numerator and denominator are e, e, f.

Cancel out the common factors.

=\dfrac{e}{f}

Therefore, the required expression is \dfrac{e}{f}.

6 0
2 years ago
The value of x is ___, and the value of y is ___. <br><br> Please help me out! Thanks! <br> :)
vagabundo [1.1K]
The value of x is 60, as you wrote. The sum of all angles in a triangle is 180°.

The sum of all angles on a straight line is also 180°. So to find y, solve for the third angle of the triangle on the left.

50 + 60 = 110. 180-110 = 70°.

Now we know 2 of the 3 angles along the line (70° and x, 60°)

70 + 60 + y = 180
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Hope this helps. LMK if you have questions.
5 0
3 years ago
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