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emmainna [20.7K]
3 years ago
11

Subtract the following polynomials in this equation

Mathematics
1 answer:
cluponka [151]3 years ago
8 0
A is the answer to your question
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The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand
alexira [117]

Answer:

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }  

            t = <em>1.076</em>

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given Mean of the Population (μ) = 8.0

<em>Mean of the sample (x⁻) = 8.25</em>

Given data

                  8,9,9,8,8,9,8,7

Given sample size  n= 8

Given sample standard deviation(S) = 0.661

<u><em>Step(ii):-</em></u>

<em>Null hypothesis : H:  (μ) = 8.0</em>

<em>Alternative Hypothesis :H:(μ) > 8.0</em>

<em>Degrees of freedom = n-1 = 8-1=7</em>

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }<em></em>

<em>              </em>t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }<em></em>

<em>            t =  1.076</em>

<em>Critical value </em>

<em>                    t₍₇,₀.₀₅₎   = 2.3646</em>

<em>The calculated value   t =  1.076 < 2.3646 at 0.05 level of significance</em>

<em>Null hypothesis is accepted</em>

<em>Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0</em>

<em></em>

3 0
3 years ago
The perimeter of this isosceles triangle is 16cm
nadezda [96]

Answer:

Step-by-step explanation:

B

Hope I heped

5 0
3 years ago
Read 2 more answers
PARK is a parallelogram. Find the value of x.
jekas [21]

Answer: 40

Step-by-step explanation:

8 0
3 years ago
I I need the answer as soon as possible please!! (Worth 15 points!)
NARA [144]

Answer:

70

Step-by-step explanation: Lets say x is the integer

5,600/x=80 is the same as

5,600÷x=80.

You should then rewrite it as 5,600÷80=x

Now simplify.

x=70

4 0
3 years ago
1 point
SpyIntel [72]

Answer:

20

Step-by-step explanation:

IF you are asking why it is because 50-32=18 than you do 18/.90 which equals 20 so there you go thanks make brainliest

3 0
3 years ago
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