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Fudgin [204]
3 years ago
14

An SRS of 2,500 individuals was taken from a large city to estimate the percentage of city residents with a graduate degree. 555

people in the sample had a graduate degree. The percentage of individuals in the city with a graduate degree is estimated as 22.2%. The estimated standard error is closest to:_______a. 1%b. 10% c. 0.1%
Mathematics
1 answer:
Luden [163]3 years ago
7 0

Answer:

The option is  b

Step-by-step explanation:

From the question we are told that

    The sample size is  n =  2500

   The number with a graduate degree is  k =  555

    The sample  proportion is \^ p = 0.222

Generally the standard error is mathematically represented as

           SE = \sqrt{\frac{\^ p (1- \^ p )}{n} }

=>        SE = \sqrt{\frac{0.222 (1- 0.22 )}{2500 } }

=>        SE = 0.010

Converting to percentage

           SE = 0.010 * 100

=>       SE =10\%

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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If the absolute value of a number is added to the original number will the sum always equal 0
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3 years ago
The length of a rectangle is four times its width.
Irina-Kira [14]

Answer:

Length = 24 yd

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Step-by-step explanation:

To start out, we can begin by saying that "l" is the length of the rectangle, and "w" is the width.

Since we know that the length (l) is 4 times its width we can say that 4 times the width is equal to its length. We would write this out this way :

4w = l

Next, we know that the perimeter is 60yd (as it is given in the question). We also know that the perimeter of a rectangle is all of its sides, added. Meaning the length plus the length, plus the width and the width. So, we can use the equation :

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Now, we solve

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Therefore, the width is 6.

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Now, we officially know that the length of the rectangle is 24 and the width is 6.

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