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sladkih [1.3K]
3 years ago
15

Help

Mathematics
1 answer:
Alina [70]3 years ago
8 0
This is the answer
Uh it has to be 20 characters long for me to give you the pic so here

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The standard deviation for a set of data is 6.5. The mean is 255. What is the Margin of Error?​
HACTEHA [7]

Answer: The margin of error is 12.74.

Step-by-step explanation:

Since we have given that

Standard deviation = 6.5

Mean = 255

Let 95% level of significance,

So, z value = 1.96

We need to find the "Margin of error":

So, it becomes :

Margin of error = Standard deviation × z-value

Margin of error = 6.5\times 1.96=12.74

Hence, the margin of error is 12.74.

3 0
3 years ago
2<br> 1<br> X 46<br> 7. Find the m 2 JKL<br> in rhombus JKLM
almond37 [142]

Step-by-step explanation:

since KLJ is a parallelogram, it can be split into 2 congruent triangles, as seen above. The angles remain the same, so we know angle KJL is also 25 degrees. Using the triangle angle sum theorem (all sides of a triangle add up to 180 degrees), we can determine the missing angle measure is 25 degrees. It would have been nice if the question told us JKLM was also a rhombus.

7 0
3 years ago
The price of an item has been reduced by 20%. the origianal price was 76
mafiozo [28]

Answer:

$60.8

Step-by-step explanation:

Twenty percent of 76 is,

→ 20% of 76

→ (20/100) × 76

→ 1520/100

→ [ $15.2 ]

The reduced price of the item is,

→ 76 - 15.2

→ [ $60.8 ]

Hence, the price is $60.8.

4 0
2 years ago
what is the expression of 3/4 times 5/7 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
GREYUIT [131]

Answer:

3 x 5 = 15

4 x 7 = 28

the answer is 15/28

;)

8 0
3 years ago
Oof I am really confused on 13. Can someone help me with it? I’ll really appreciate it. Thanks!
lesya [120]

I guess its C, not sure though

5 0
3 years ago
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