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yKpoI14uk [10]
3 years ago
5

1. Which pair of expressions is equivalent?

Mathematics
1 answer:
inn [45]3 years ago
6 0

Answer:

A

Step-by-step explanation:

x + x = 2x and 3y = 3y therefore x+x+ 3y = 2x +3y

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The standard deviation of the distribution of sample means is​ _______.
luda_lava [24]

Answer:

Standard error

Step-by-step explanation:

The standard deviation of the distribution of sample means is called the standard error of the means.

It is denoted by: \sigma_{\bar X}

The standard error is calculated using the formula: \sigma_{\bar X}=\frac{\sigma}{\sqrt{n} }

where n is the sample size and \sigma is the population standard deviation.

6 0
3 years ago
Describe the correct the error in finding the area of the triangle
lions [1.4K]

Answer:

Since the area of a triangle is 1/2 base times height, it should be a=1/2(10)(12m)

So the area would be 60 meters squared.

Step-by-step explanation:

4 0
3 years ago
Now we are testing to see whether taking a vitamin supplement each day has significant health benefits. There are no (known) har
ZanzabumX [31]

Answer:

Concluding that people should take vitamin supplement each day when they don't help.            

Step-by-step explanation:

We are given the following in the question:

Hypothesis:

Taking a vitamin supplement each day has significant health benefits and does not have any harmful side effects.

Null hypothesis:

Taking a vitamin supplement each day does not have have significant health benefits.

Alternate hypothesis:

Taking a vitamin supplement each day have have significant health benefits.

Type I error:

  • It the error of rejecting the a true null hypothesis.

So error I for this situation would be concluding that people should take vitamin supplement each day when they don't help.

3 0
3 years ago
A basketball team has 8 players. In how many different ways can the coach select 2 players to be the captains for tonight's game
Basile [38]
Since the problem is not concerned about the order of choosing the captain, the concept used is the combination. From 8 players, 2 are to be chosen,
                                  8C2 
The numerical value of the combination is 28. Thus, the answer is letter B. 
3 0
3 years ago
Read 2 more answers
Relative frequency of 80
aleksklad [387]

Answer:8/10

Step-by-step explanation:

7 0
2 years ago
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