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Radda [10]
3 years ago
8

What is the median of the data in this stem-and-leaf plot?

Mathematics
2 answers:
lana66690 [7]3 years ago
6 0

Answer:

23 good luck

Step-by-step explanation:

Andrew [12]3 years ago
3 0
It would be 23.

To get the median, first you would have to list all of the numbers from the stem-and-leaf plot in order:

14, 15, 17 ,21 ,22 ,24 ,24 ,26 ,30 ,32
Then you have to find the number in the middle. 

22 and 24 are in the middle.

However, we can't have 2 numbers as the median!
We would add both of the numbers then divide by 2, or you could use the number that is between 22 and 24.

22 + 24= 46
46/2 = 
23

The answer would then be 23

(*To tell whether the median is 2 numbers, check and count the set of numbers and see whether if the result is an even or odd number. Odd number have 1, while evens has 2.)
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Read 2 more answers
Find the minimum sample size needed to estimate the percentage of Democrats who have a sibling. Use a 0.1 margin of error, use a
Brums [2.3K]

Answer:

The minimum sample size is  n  =135

Step-by-step explanation:

From the question we are told that

   The confidence interval is ( lower \ limit  = \  0.44,\ \ \   upper \ limit  = \ 0.51)

    The margin of error is  E =  0.1

   

Generally the sample  proportion can be mathematically evaluated as

     \r p = \frac{ upper \ limit  + lower \ limit }{2}

    \r p = \frac{ 0.51 + 0.44}{2}

    \r p = 0.475

Given that the confidence level is  98% then the level of significance can be mathematically evaluated as

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        \alpha =0.02

Next we obtain the critical value of  \frac{\alpha }{2} from the normal distribution table  

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        Z_{\frac{\alpha }{2} } =  2.33

Generally the minimum sample size is evaluated as

      n  =[ \frac { Z_{\frac{\alpha }{2} }}{E} ]^2 *  \r p (1- \r p )

     n  =[ \frac { 2.33}{0.1} ]^2 *  0.475(1- 0.475 )

     n  =135

6 0
4 years ago
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