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3 years ago

Find the median of each set of data.

Mathematics

2 answers:

dedylja [7]3 years ago

8 0

Answer:

1 - 7

2 - 5

3- 27.5

Step-by-step explanation:

siniylev [52]3 years ago

7 0

Answer:

7 for the first data set

5 for the second data set

27.5 for the third data set

Step-by-step explanation:

So, first, you have to sort out the numbers from least to greatest.

1, 4, 6, 8, 10, 12

0, 2, 3, 5, 5, 6, 9, 11

16, 25, 30, 49

Then, you have to find the middle number.

Sometimes, there are more than one middle number, which is right now.

In cases like this, there are two medians, and those are,

6 and 8

25 and 30

Then, you have to find the middle of those two.

Hope this helps!!

Let me know if you have any other problems!!

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Which system of equations has the same solution as the system below?

worty [1.4K]

Answer: Both A, and C

Step-by-step explanation:

The answer to the first system of equations (2x+2y=16) would be

x=3 and y=5 ( 3x-y=4 )

Which means we have to find out which of the other equations has an x value of 3, and a y value of 5.

If A is 2x+2y=16, then x=3 and y=5

6x-2y=8

If B is x+y=16, then x=5 and y=11

3x-y=4

If C is 2x+2y=16, then x=3 and y=5

6x-2y=8

If D is 6x+6y=48 , then x=-2 and y=10

6x+2y=8

Both A and C are equal to the first system of equations, which means they are both correct answers.

8 0

3 years ago

In an experiment, some diseased mice were randomly divided into two groups. One group was given an experimental drug, and one wa

damaskus [11]

Answer:

D)Yes, because the difference in the means in the actual experiment was more than two standard deviations from 0.

Step-by-step explanation:

We will test the hypothesis on the difference between means.

We have a sample 1 with mean M1=18.2 (drug group) and a sample 2 with mean M2=15.9 (no-drug group).

Then, the difference between means is:

$M_d=M_1-M_2=18.2-15.9=2.3$

If the standard deviation of the differences of the sample means of the two groups was 1.1 days, the t-statistic can be calculated as:

$t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{2.3-(0)}{1.1}=2.09$

The critical value for a two tailed test with confidence of 95% (level of significance of 0.05) is t=z=1.96, assuming a large sample.

This is approximately 2 standards deviation (z=2).

The test statistict=2.09 is bigger than the critical value and lies in the rejection region, so the effect is significant. The null hypothesis would be rejected: the difference between means is significant.

4 0

3 years ago

A mantee surfaced for air 3 times in 120 seconds

Fantom [35]

Answer:

40 seconds

Step-by-step explanation:

7 0

2 years ago

I can't seem to figure this out

lesya [120]

To answer this question, you would need a protractor, which is a device that measures angle. Because this is a picture, I cannot help you. I'm sorry....

What I can tell you is that the angle is less than 90 degrees.

5 0

3 years ago

A Flagpole casts a shadow 32 feet long. If a man is 6 feet tall casts a shadow 8 feet long at the same time and location. How ta

Kaylis [27]

24 feet
Set up a ratio of object height to shadow length.
So x/32=6/8
8(4)=32 so 6(4) would be 24.

4 0

2 years ago