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Ratling [72]
2 years ago
7

THis is due in 28 minutes help ASAP

Mathematics
2 answers:
SVETLANKA909090 [29]2 years ago
8 0

Answer:

120,000 cm

Step-by-step explanation:

multiply 1.2 by 100,000

Virty [35]2 years ago
6 0

Answer:

I promise you that it is 120,000cm

Step-by-step explanation:

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A random sample of 87 eighth grade students’ scores on a national mathematics assessment
Finger [1]

There is not enough evidence to support the administrator’s claim and the true mean is not significantly greater than 280.

<h3>What is a statistical hypothesis?</h3>

A hypothesis to test the given parameters requires that we determine if the mean score of the eighth graders is more than 283, thus:

The null hypothesis:

\mathbf{H_o \leq 283}

The alternative hypothesis:

\mathbf{H_i > 283}

From the population deviation, the Z test for the true mean can be computed as:

\mathbf{Z = \dfrac{\hat X - \mu _o}{\dfrac{\sigma}{\sqrt{n}}}}

\mathbf{Z = \dfrac{283 -280}{\dfrac{37}{\sqrt{87}}}}

Z = 0.756

Note that, since we are carrying out a right-tailed test, the p-value for the test statistics is expressed as follows:

P(z > 0.756)

P = 0.225

Since the P-value is greater than the significance level at α = 0.14, we can conclude that there is not enough evidence to support the administrator’s claim and the true mean is not significantly greater than 280.

Learn more about hypothesis testing here:
brainly.com/question/16251072

#SPJ1

8 0
1 year ago
The middle of the skate ramp is 2.5 meters wide. Emelia and her father want to use a board that is 23.5 decimeters long. Is this
Vinvika [58]

Answer:

it's 1 dekameter (dam) = 10 meters you need to use that

4 0
2 years ago
Arithmetic??????????????????
wel

good lesson and good day ^-^

7 0
2 years ago
Which best describes the relationship between the line that
LUCKY_DIMON [66]
Same line so the correct answer is b
5 0
3 years ago
6f-7=29;5 what is this answer or how do you do i am having trouble finding it out
erik [133]
6(5)-7
30-7
23
The answer is false because it doest equal 29
8 0
3 years ago
Read 2 more answers
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