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cricket20 [7]
2 years ago
11

When constructing a confidence interval for a difference between two population proportions, why is it important to check that t

he number of successes and the number of failures in each sample is at least 10?.
Mathematics
1 answer:
Ierofanga [76]2 years ago
5 0

The reason why the number of failures and successes in two population proportions must be up to 10 is because it is important to have many of samples from both populations.

<h3>What is a Confidence Interval?
</h3>

This refers to the probability displayed that a parameter will exist between a pair of values around the mean.

It measures the extent to which one can be certain or uncertain about ones sampling method. Confidence Intervals are usually constructed using levels of 95% or 99%.


Learn more about confidence interval in the link below:
brainly.com/question/15712887

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Aleks [24]

Answer: y=5

Step-by-step explanation:

Similar basically means it's the same shape but bigger. Condiering how 16-9=7 which means each side is 7 bigger than the original shape. You subtract 7 from 12(side y) to get 5

7 0
3 years ago
This one is the one I need help with my final question
STatiana [176]

Answer:

vertex C could be at (6,0) or (2,8)

(I'm sorry if I'm wrong, but if not I hope this helps!)

Step-by-step explanation:

vertex C needs to be placed somewhere on the graph where it would form a right angle (and therefore a right-angled triangle as well). vertex C could be at (6,0) or (2,8). this is because at these two points vertex C will form a right angle, therefore making it a right-angled triangle.

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=2%284%29%28%20%5Cfrac%7B1%7D%7B16%7D%20%29%20%3D%20" id="TexFormula1" title="2(4)( \frac{1}{16
Radda [10]

Answer:

0.5

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Hope this helped :)

7 0
3 years ago
Real fourth roots of 81
aleksandrvk [35]
3 is real 4th roots of 81
8 0
3 years ago
Read 2 more answers
Solve the equation.<br> -2/3 (x + 3/5) = 1/2<br><br><br><br> x=
Rom4ik [11]
−
2
3
(
x
+
3
5
)
=
1
2
Step 1: Simplify both sides of the equation.
−
2
3
(
x
+
3
5
)
=
1
2
(
−
2
3
)
(
x
)
+
(
−
2
3
)
(
3
5
)
=
1
2
(Distribute)
−
2
3
x
+
−
2
5
=
1
2
Step 2: Add 2/5 to both sides.
−
2
3
x
+
−
2
5
+
2
5
=
1
2
+
2
5
−
2
3
x
=
9
10
Step 3: Multiply both sides by 3/(-2).
(
3
−
2
)
*
(
−
2
3
x
)
=
(
3
−
2
)
*
(
9
10
)
x
=
−
27
20
Answer:
x
=
−
27
20
6 0
2 years ago
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