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3 years ago

The standard deviation of a population is 4.1. What is the margin of error?

Mathematics

1 answer:

grin007 [14]3 years ago

4 0

Answer:

Margin of error is 4.1

Step-by-step explanation:

The margin of error in statistics refers to a quantity which expresses the amount of random sampling error from the results of a survey conducted. A large margin of error implies less confidence in the results of the survey.

The margin of error can be approximated using the population standard deviation, if known.

Therefore, the margin of error will be reported as 4.1

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What are the factors of 24, 30, 42

motikmotik

Factors of 24: 1,2,3,4,6,8,12,24
factors of 30: 1,2,3,5,6,10,15,30
factors of 42: 1,2,3,6,14,21,42

3 0

2 years ago

A streetlamp has a 20 ft shadow that makes a 40° angle with the ground. which expression represents the height of the street lam

Oduvanchick [21]

Answer:

20 sin 40° ≈ 12.86 ft

Step-by-step explanation:

Let the height of the street lamp be x

Opposite angle is 40° and the shadow, the hypotenuse of the formed triangle is 20 ft.

sin 40° = x/20
x = 20sin 40°
x ≈ 12.86 ft

6 0

3 years ago

Brain enjoys hang gliding on his last flight, he jumped off a cliff 520 high he landed 450 from the base of the cliff how far di

belka [17]

Answer:

Brain travelled 687.68 from the cliff.

Step-by-step explanation:

Given that:

Height of the cliff = 520

Base of the cliff = 450

The distance will form the hypotenuse of right angled triangle.

Pythagorean theorem states square of hypotenuse of right angled triangle is equal to the sum of squares of base and height of triangle.

Using pythagorean theorem;

a = 520, b=450, c = hypotenuse

$a^2+b^2=c^2\\(520)^2+(450)^2=c^2\\270400+202500=c^2\\472900=c^2\\c^2=472900$

Taking square root on both sides

$\sqrt{c^2}=\sqrt{472900}\\c=687.68$

Hence,

Brain travelled 687.68 from the cliff.

6 0

2 years ago

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Sav [38]

Answer:

It is 1,225 or just 1225.

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Answer:

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2 years ago

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