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azamat
3 years ago
15

Find the median of the set of data. Use a calculator if necessary. (Remember to put the list in numerical order.)

Mathematics
2 answers:
e-lub [12.9K]3 years ago
6 0

Answer:

median is 9

Step-by-step explanation:

to find median u must arrange the data from ascending to descending order.

6 , 7 , 9 , 12 , 13

median = N + 1/2   (N means no of data)

= 5 + 1/2

= 6/2

= 3 th term

= 9

GalinKa [24]3 years ago
5 0

Answer:

9

Step-by-step explanation:

To find the median of a set of data, arrange the data by value:

6, 7, 9, 12, 13

The number in the middle is the median.

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You then multiply this decimal to the number you are trying to find the percentage of.

.15 × 60 = 9.

9 is 15% of 60.
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3 0
2 years ago
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4vir4ik [10]
ANSWER: 312 3/8
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4 0
3 years ago
The mayor of a town has proposed a plan for the annexation of an adjoining community. A political study took a sample of 900 vot
Stells [14]

Answer:

z=\frac{0.75 -0.72}{\sqrt{\frac{0.72(1-0.72)}{900}}}=2.00  

Now we can calculate the p value. Since is a bilateral test the p value would be:  

p_v= P(Z>2) =0.0228

Since the p value is lower than the significance level of 0.05 we have enough evidence to conclude that the true proportion of residents favored annexation is higher than 0.72 or 72%

Step-by-step explanation:

Information given

n=900 represent the random sample selected

\hat p=0.75 estimated proportion of residents favored annexation

p_o=0.72 is the value that we want to test

represent the significance level

z would represent the statistic

p_v represent the p value

Hypothesis to test

The political strategist wants to test the claim that the percentage of residents who favor annexation is above 72%.:  

Null hypothesis:p\leq 0.72  

Alternative hypothesis:p > 0.72  

The statistic for this case is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the data given we got:

z=\frac{0.75 -0.72}{\sqrt{\frac{0.72(1-0.72)}{900}}}=2.00  

Now we can calculate the p value. Since is a bilateral test the p value would be:  

p_v= P(Z>2) =0.0228

Since the p value is lower than the significance level of 0.05 we have enough evidence to conclude that the true proportion of residents favored annexation is higher than 0.72 or 72%

3 0
2 years ago
Please help me with this!<br><br><br> show that {1,2} ⊆ {x|x^4 - x^3 - x^2 - 5x + 6 = 0}
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x=2\implies2^4-2^3-2^2-10+6=0

The equation holds, so both 1 and 2 are solutions, and hence \{1,2\} is a subset of the solutions.

6 0
3 years ago
Use the elimination method to solve the system of equations. What is the correct ordered pair. Explain.
natta225 [31]
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3(1) = x - 1
3 = x - 1
3 + 1 = x
4 = x

solution is (4,1)
5 0
3 years ago
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