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vladimir1956 [14]
2 years ago
8

When a number N is rounded to the nearest ten, the result is 630, but when

Mathematics
1 answer:
MAXImum [283]2 years ago
4 0

Answer:

  • N = 625 to 634
  • N = 15000 or 24999

Step-by-step explanation:

<h3>Part 1</h3>

Let N = abc

  • If ab = 62 then c could be any number between 5 to 9, it will round up to 630
  • If ab = 63 then c could be any number between 0 and 4, it will round down to 630
<h3>Part 2</h3>
  • N = 15000 ≈ 20000
  • N = 24999 ≈ 20000
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Complete Question

A random sample of 300 circuits generated 13 defectives. a. Use the data to test

                            H_o : p = 0.05

Versus

 

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Use α = 0.05. Find the P-value for the test

   

Answer:

The  p-value is  p-value =  0.5949        

Step-by-step explanation:

From the question we are told that

  The sample size is  n = 300

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Generally the standard Error is mathematically represented as

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=>     SE  = \sqrt{\frac{0.05(1- 0.05)}{300} }

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Generally the test statistics is mathematically represented as

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=>     z =  \frac{0.0433 - 0.05 }{0.0126}

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From the z table  the area under the normal curve to the left  corresponding to  -0.5317  is

         (P < -0.5317 ) = 0.29747

Generally the p-value is mathematically represented as

       p-value =  2 * P(Z <  -0.5317 )

=>     p-value =  2 * 0.29747

=>     p-value =  0.5949        

     

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