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aksik [14]
2 years ago
10

Find the difference. 10 - 14

Mathematics
1 answer:
Leni [432]2 years ago
8 0

Answer:

like regular subtraction? or  

what

Step-by-step explanation:

10-14= -4 very confused on what you asking

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Please Help! Multiple Choice!
Katyanochek1 [597]

Using the z-distribution, the p-value would be given as follows:

b) 0.0086.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis we test if the means are equal, hence:

H_0: \mu_D - \mu_C = 0

At the alternative hypothesis, it is tested if they are different, hence:

H_1: \mu_D - \mu_C \neq 0

<h3>What are the mean and the standard error for the distribution of differences?</h3>

For each sample, they are given as follows:

  • \mu_D = 12, s_D = \frac{5.2}{\sqrt{73}} = 0.6086
  • \mu_C = 14, s_C = \frac{4.1}{\sqrt{81}} = 0.4556

Hence, for the distribution of differences, they are given by:

  • \overline{x} = 12 - 14 = -2.
  • s = \sqrt{0.6086^2 + 0.4556^2} = 0.76

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{x} - \mu}{s}

In which \mu = 0 is the value tested at the null hypothesis.

Hence:

z = \frac{\overline{x} - \mu}{s}

z = \frac{-2 - 0}{0.76}

z = -2.63.

Using a z-distribution calculator, for a two-tailed test, with z = -2.63, the p-value is of 0.0086.

Hence option B is correct.

More can be learned about the z-distribution at brainly.com/question/13873630

#SPJ1

4 0
2 years ago
Which unit should be used to measure the amount of water used
Vesna [10]

Answer:

iters and millimets

Step-by-step explanation:

Ur welcome:)

7 0
3 years ago
Can you please help???
marusya05 [52]

Answer:

2 or 3 I think

I gessssssssssing

5 0
2 years ago
How do you work it out ???
Natalka [10]
Answer = 70 girls

Firstly, turn 56% into a decimal

56 / 100 = 0.56

Afterwards, multiply that by the number of girls

0.56 x 126 = 70.56

It would be 70 girls bc you can’t have 70 and a half girls.
6 0
3 years ago
PLEASE HURRY!!! Lori used 4 containers of blueberries to make blueberry muffins, each container holds 2/3 cup, she also used 1 2
djyliett [7]

Answer:

2 2/3

Step-by-step explanation:

4 × 2/3

4/1 × 2/3

8/3

2 2/3

6 0
2 years ago
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