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Rom4ik [11]
3 years ago
14

Find the margin of error for the given values of c, o, and n. C =0,95, 0 =2.6, n = 100

Mathematics
1 answer:
diamong [38]3 years ago
6 0

Answer:

Margin of error = 0.475

Step-by-step explanation:

Given that,

Confidence level, C = 0.95

Sample size, n = 100

Population standard deviation, \sigma = 2.6

When the confidence level is 0.95, the value of z_{\alpha/2}=1.645

The margin of error is given by :

E=z_{\alpha/2}\times \dfrac{{\sigma}}{\sqrt{n} }\\\\E=1.645\times \dfrac{{2.6}}{\sqrt{81} }\\\\=0.475

So, the margin of error is 0.475.

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Find the area of a rectangle 4 3/4 feet long and 2 feet long
omeli [17]

Answer:

9.5 ft^2

Step-by-step explanation:

It’s just 4.75 * 2

7 0
3 years ago
If < A and < B are vertical angles, and < A = 5x - 1 degrees, and < B = 4x + 4 degrees, find x.
ArbitrLikvidat [17]

Answer:

x = 5

Step-by-step explanation:

vertical angles are congruent , so

∠ A = ∠ B , that is

5x - 1 = 4x + 4 ( subtract 4x from both sides )

x - 1 = 4 ( add 1 to both sides )

x = 5

4 0
2 years ago
What is the surface area of the cylinder with height 4 mi and radius 3 mi? Round your answer to the nearest thousandth.
Norma-Jean [14]

Answer:

The surface area of the cylinder will be "131.88".

Step-by-step explanation:

The given values are:

Height of cylinder,

h = 4 m

Radius of cylinder,

r = 3 m

As we know,

The surface are of cylinder is:

⇒  A_s=2 \pi r(h+r)

On substituting the values, we get

⇒       =2\times 3.14\times 3(4+3)

⇒       =18.84\times 7

⇒       =131.88

5 0
3 years ago
Mixed numbers between 6 and 8 with an interval of 1/4 between each pair of mixed numbers
Dominik [7]
Those numbers would be,
6 \frac{1}{4} 6 \frac{2}{4} 6 \frac{3}{4}77 \frac{1}{4}  7\frac{2}{4}  7\frac{3}{4}
Hope this helps!=)
7 0
3 years ago
The sum of two numbers is 60. Their difference is 40. Which are the numbers? ​
Rudik [331]
10, 50 because they add up to 60 and they have a difference of 40
3 0
3 years ago
Read 2 more answers
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