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RUDIKE [14]
3 years ago
12

2x? 8 2x3 16x9 7x 56

Mathematics
1 answer:
Anika [276]3 years ago
8 0
The kid 627 the answer of the answer would be 62
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It is known that the length of time that people wait for a city bus to arrive is right skewed with mean 6 minutes and standard d
Natali [406]

Answer:

The standard deviation of the sampling distribution of the sample wait times is of 0.8 minutes.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30. Otherwise, the mean and the standard deviations holds, but the distribution will not be approximately normal.

Standard deviation 4 minutes.

This means that \sigma = 4

A sample of 25 wait times is randomly selected.

This means that n = 25

What is the standard deviation of the sampling distribution of the sample wait times?

s = \frac{4}{\sqrt{25}} = 0.8

The standard deviation of the sampling distribution of the sample wait times is of 0.8 minutes.

4 0
2 years ago
Can u help with this hm? Its due in 30 mins ps. In think 10 pts givin away
Irina18 [472]
4. Answer: 1/32 ^7

5. Answer: (3 ^2)^6

6. Answer:c

Tania multiplied the exponents in the parentheses 4 and 4 then multiplied 16 to -3= -48 then multiplied the number 3 and 5=15

3 0
3 years ago
Read 2 more answers
A point represents what in geometry
nasty-shy [4]
It represents location
4 0
3 years ago
Why is the ? in the proportion below equal to QR? Explain why.
Artyom0805 [142]

9514 1404 393

Answer:

  A) SQ is the geometric mean between the hypotenuse and the closest adjacent segment of the hypotenuse.

Step-by-step explanation:

In this geometry, all of the right triangles are similar. That means corresponding sides have the same ratio (are proportional).

Here, SQ is the hypotenuse of ΔSQT and the short side of ΔRQS.

Those two triangles are similar, so we can write ...

  (short side)/(hypotenuse) = QT/SQ = QS/RQ

In the above proportion, we have used the vertices in the same order they appear in the similarity statement (ΔSQT ~ ΔRQS). Of course, the names can have the vertices reversed:

  QT/SQ = SQ/QR . . . . . QS = SQ, RQ = QR

__

When this is rewritten to solve for SQ, we get ...

  SQ² = QR·QT

  SQ = √(QR·QT) . . . . SQ (short side) is the geometric mean of the hypotenuse and the short segment.

8 0
3 years ago
In the expression 3v - 8, what is the variable a= V b= - c= 3 d= 8
Jobisdone [24]

Answer:

a. v

Step-by-step explanation:

Given

3v - 8

Required

Identify the variable

Literary, variable means things that change in values;

Going by this definition, we have that:

3 -> This is not a variable because its value will always be 3

v -> This is a variable because its value can change once its value changes, the result of the expression will also change

- -> This is not a variable; it is an arithmetic operator to subtract

8 -> This is not a variable because its value will always be 8

Take for instance

v = 2

3v - 8 = 3 * 2 - 8 = 6 - 8 = -2

When v =5

3v - 8 = 3 * 5 - 8 = 15 - 8 = 7

<em>Notice that there's a difference in both results;</em>

<em>This is as a result of v being a variable</em>

4 0
3 years ago
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