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Nuetrik [128]
2 years ago
5

You have been given the task of finding out what proportion of students that enroll in a local university actually complete thei

r degree. you have access to first year enrolment records and you decide to randomly sample 114 of those records. you find that 88 of those sampled went on to complete their degree. a)calculate the proportion of sampled students that complete their degree. give your answer as a decimal to 3 decimal places.
Mathematics
1 answer:
expeople1 [14]2 years ago
3 0
The sample proportion p is found as follows:
p=\frac{88}{114}=0.772
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ivann1987 [24]

Given :

  • A = {x: 2x² + 3x - 2 = 0 }
  • B = {x : x² + 3x - 4 = 0 }

To find :

  • (A U B ) × (A Π B )

Solution :-

<u>The </u><u>first </u><u>set </u><u>is </u><u>,</u>

  • A ={x : 2x² + 3x - 2 = 0}

<u>Solving</u><u> </u><u>the </u><u>Quadratic</u><u> equation</u><u> </u><u>,</u>

  • 2x² + 3x - 2 = 0
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  • 2x( x + 2) -1( x + 2 ) = 0
  • (2x -1) ( x + 2) = 0
  • x = 0.5 , -2

<u>Hence</u><u> </u><u>,</u>

  • A ={0.5, -2}

<u>The </u><u>second</u><u> </u><u>set </u><u>is </u><u>,</u>

  • B ={ x :x² + 3x - 4 = 0 }

<u>Solving</u><u> the</u><u> Quadratic</u><u> equation</u><u> </u><u>,</u>

  • x² + 3x - 4 = 0
  • x² + 4x - x - 4 = 0
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  • (x + 4) ( x -1) = 0
  • x = 1 , -4

<u>Hence</u><u> </u><u>,</u>

  • B ={1,4}

<u>Now </u><u>,</u>

  • A U B = { 0.5 , 1 , 4 , -2}
  • A Π B = {∅ }

Since AΠ B is a null set , hence ,

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8 0
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mario62 [17]

Answer:

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Step-by-step explanation:

soh= o/h

sin(y)=4/20

y=sin^-1(4/20)

8 0
2 years ago
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prisoha [69]

Answer:

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Step-by-step explanation:

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It can be concluded from the research that the differences in the average scores is probably due to the working memory of the two groups.

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Answer:

Step-by-step explanation:

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Let W represent the width of the rectangle.

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Then substitute 12 in for the length and 6in for the width. It becomes.

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Svet_ta [14]
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6*10^(-6)m^3

or 0.000006 meters cubed
4 0
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