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REY [17]
3 years ago
5

Help me please anyone

Mathematics
2 answers:
miss Akunina [59]3 years ago
7 0
Greater than 20 and 200
Tems11 [23]3 years ago
6 0

Answer:

Greater than 200.

Step-by-step explanation:

5,309 / 26 = 204


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A new centrifugal pump is being considered for an application involving the pumping of ammonia. The specification is that the fl
ankoles [38]

Answer:

1.

The null hypothesis is H_0: \mu = 4

The alternate hypothesis is H_1: \mu > 4

2.

The p-value of the test is of 0.0045.

3.

The p-value of the test is low(< 0.01), which means that there is enough evidence that the flow rate is more than 4 gallons per minute (gpm) and thus, the pump should be put into service.

Step-by-step explanation:

A new centrifugal pump is being considered for an application involving the pumping of ammonia. The specification is that the flow rate be more than 4 gallons per minute (gpm).

At the null hypothesis, we test that the mean is 4, so:

H_0: \mu = 4

At the alternate hypothesis, we test that the mean is more than 4, that is:

H_1: \mu > 4

The test statistic is:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, s is the standard deviation and n is the size of the sample.

4 is tested at the null hypothesis:

This means that \mu = 4

In an initial study, eight runs were made. The average flow rate was 6.4 gpm and the standard deviation was 1.9 gpm.

This means that n = 8, X = 6.4, s = 1.9

Test statistic:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{6.4 - 4}{\frac{1.9}{\sqrt{8}}}

t = 3.57

P-value of the test:

The p-value of the test is the probability of finding a sample mean above 6.4, which is a right-tailed test with t = 3.57 and 8 - 1 = 7 degrees of freedom.

With the help of a calculator, the p-value of the test is of 0.0045.

3. Should the pump be put into service?

The p-value of the test is low(< 0.01), which means that there is enough evidence that the flow rate is more than 4 gallons per minute (gpm) and thus, the pump should be put into service.

6 0
3 years ago
Pleaseee help me <br> Xxxxx
Lapatulllka [165]

Answer:

B

The equation is in slope-intercept form. So that speaking, 4 is the y-intercept.

4 0
3 years ago
Read 2 more answers
Solve 8n + 20 &lt; 6n + 24
antoniya [11.8K]

Answer:

  n < 2

Step-by-step explanation:

This inequality can be solved the same way the corresponding 3-step linear equation would be solved.

  8n +20 < 6n +24 . . . . . given

  2n +20 < 24 . . . . . . . . step 1, subtract 6n to isolate the variable on the left

  2n < 4 . . . . . . . . . . . . step 2, subtract 20 to separate constants and variable terms

  n < 2 . . . . . . . . . . . divide by the coefficient of the variable

4 0
2 years ago
Read 2 more answers
Which shapes can the composite figure be divided into to find the area?
GrogVix [38]
A rectangle and two triangles
3 0
3 years ago
If the area of a circle is 98​
Pachacha [2.7K]

Answer:

7 \sqrt{2}

Step-by-step explanation:

given : area =98π

we know area of a circle = π r^2

hence

πr^2=98π { cancelling both π }

r^2=98

r =  \sqrt{98}

r = 7 \sqrt{2}

hope it helps

3 0
3 years ago
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