The subjects in the dataset answered a call for volunteers to participate to this study. Assuming every subject who volunteered has a recorded response for every variable, what kind of bias could possibly result from this sampling design?

Answer: 39

Step-by-step explanation: the distance is always positive, 39 + 0 = 39

Answer:

39

Step-by-step explanation:

39 is 39 numbers away from zero. it really doesn't get simpler.

Answer:

A =420 cm^2

Step-by-step explanation:

The area of a triangle is given by

A = 1/2 bh where b is the length of the base and h is the height

A = 1/2 ( 24) * 35

A =420 cm^2

Answer:

The area of triangle is 420 cm ².

Step-by-step explanation:

Area of triangle = 1/2 × base × height

Using Formula

Area of triangle = 1/2 × base × height

substitute the values into the formula

Area of triangle = 1/2 × 24 cm × 35 cm

multiply,

Area of triangle = 1/2 × 840 cm ²

Divide, we get

Area of triangle = 420 cm ²

Therefore, The area of triangle is 420cm².

Answer:

Length of arc AB = 4π

Step-by-step explanation:

Formula to get the arc length is given by,

Length of arc = [tex]\frac{\theta}{360}(2\pi r)[/tex]

Here, θ = central angle subtended by the arc AB

r = Radius of the circle

By substituting the values in the formula,

Therefore, length of arc AB = [tex]\frac{120}{360}(2\pi )(6)[/tex]

                                              = 40π

Answer:

the standard error is calculated by dividing the standard deviation by sizes square root

Answer:

[tex]113.10[/tex]

Step-by-step explanation:

The area of a sector with measure [tex]\theta[/tex] and radius [tex]r[/tex] is given by [tex]A_{sec}=r^2\pi\cdot \frac{\theta}{360^{\circ}}[/tex].

What we're given:

Substituting given values, we get:

[tex]A_{sec}=12^2\pi\cdot \frac{90}{360},\\\\A_{sec}=144\pi\cdot \frac{1}{4},\\\\A_{sec}\approx \boxed{113.10}[/tex]

Answer:

6 + g = 13

Step-by-step explanation:

hope this helps have a great day!

====================================================

Work Shown:

0.95% = (0.95)/100 = 0.0095

0.95% of 100,000 = 0.0095*(100,000) = 950

We expect about 950 games will be defective.

Answer:

A: 950

Step-by-step explanation:

Answer:

Step-by-step explanation:

you like men

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Answer:

0.29

Step-by-step explanation:

Given :

n : ___ 0 _____ 1 ____ 2 ____ 3 ____ 4

P(n) : 0.82___ 0.11 ___0.04 _0.02 ___0.01

The expected number of defect in a shipment can be obtained using the expected value formula :

Expected value, E(X) = Σx*p(x)

Σx*p(x) = (0*0.82) + (1*0.11) + (2*0.04) + (3*0.02) + (4*0.01)

E(X) = 0.29

Hence, the expected number of defect in shipment is 0.29

Answer:

F(-2)= g(-2)

Step-by-step explanation:

F(-2)= g(-2), both function have the same points of intersect.

The distance from point A to point B is about 1211 feet.

Trigonometric ratio is used to show the relationship between the sides and angles of a right angled triangle.

Let h represent the height of the light house. At point A:

tan(10) = h / 796

h = 140.36 feet

At point B, let d represent the horizontal distance from B to light house:

tan(4) = 140.36/d

d = 2007 feet

The distance from A to B = 2007 - 796 = 1211 feet

The distance from point A to point B is about 1211 feet.

Find out more on trigonometric ratio at: https://brainly.com/question/24349828

Answer:

124.8 mi³

Step-by-step explanation:

volume is base area times height.

the base area is a triangle

baseline × triangle height / 2

At = 13×3.2/2

the prism height is 6

so, total volume is

13×3.2×6/2 = 124.8 mi³

Answer: 124.8 mi^3

Step-by-step explanation:

0.5*13*3.2=20.8

20.8*6=124.8

Answer:

25 degrees

Step-by-step explanation:

Angles on a line add up to 180

180-50=130

angles in a triangle add up to 180

An isosceles triangle has two equal angles

180-130=50

50/2=25

25 degrees

Answer:

The population mean is of 6.1667.

Step-by-step explanation:

Total sample size:

26 + 54 + 86 + 26 = 192

Mean:

To the mean is the sum of the midpoint of the class frequencies multiplied by its frequency(mean of 2 to 4 is 3, 4 to 6 is 5 and so on...). So

[tex]M = 3\frac{26}{192} + 5\frac{54}{192} + 7\frac{86}{192} + 9\frac{26}{192} = \frac{3*26 + 5*54 + 7*86 + 9*26}{192} = 6.1667[/tex]

The population mean is of 6.1667.

Step-by-step explanation:

Given: [∀x(L(x) → A(x))] →

[∀x(L(x) ∧ ∃y(L(y) ∧ H(x, y)) → ∃y(A(y) ∧ H(x, y)))]

To prove, we shall follow a proof by contradiction. We shall include the negation of the conclusion for

arguments. Since with just premise, deriving the conclusion is not possible, we have chosen this proof

technique.

Consider ∀x(L(x) → A(x)) ∧ ¬[∀x(L(x) ∧ ∃y(L(y) ∧ H(x, y)) → ∃y(A(y) ∧ H(x, y)))]

We need to show that the above expression is unsatisfiable (False).

¬[∀x(L(x) ∧ ∃y(L(y) ∧ H(x, y)) → ∃y(A(y) ∧ H(x, y)))]

∃x¬((L(x) ∧ ∃y(L(y) ∧ H(x, y))) → ∃y(A(y) ∧ H(x, y)))

∃x((L(x) ∧ ∃y(L(y) ∧ H(x, y))) ∧ ¬(∃y(A(y) ∧ H(x, y))))

E.I with respect to x,

(L(a) ∧ ∃y(L(y) ∧ H(a, y))) ∧ ¬(∃y(A(y) ∧ H(a, y))), for some a

(L(a) ∧ ∃y(L(y) ∧ H(a, y))) ∧ (∀y(¬A(y) ∧ ¬H(a, y)))

E.I with respect to y,

(L(a) ∧ (L(b) ∧ H(a, b))) ∧ (∀y(¬A(y) ∧ ¬H(a, y))), for some b

U.I with respect to y,

(L(a) ∧ (L(b) ∧ H(a, b)) ∧ (¬A(b) ∧ ¬H(a, b))), for any b

Since P ∧ Q is P, drop L(a) from the above expression.

(L(b) ∧ H(a, b)) ∧ (¬A(b) ∧ ¬H(a, b))), for any b

Apply distribution

(L(b) ∧ H(a, b) ∧ ¬A(b)) ∨ (L(b) ∧ H(a, b) ∧ ¬H(a, b))

Note: P ∧ ¬P is false. P ∧ f alse is P. Therefore, the above expression is simplified to

(L(b) ∧ H(a, b) ∧ ¬A(b))

U.I of ∀x(L(x) → A(x)) gives L(b) → A(b). The contrapositive of this is ¬A(b) → ¬L(b). Replace

¬A(b) in the above expression with ¬L(b). Thus, we get,

(L(b) ∧ H(a, b) ∧ ¬L(b)), this is again false.

This shows that our assumption that the conclusion is false is wrong. Therefore, the conclusion follows

from the premise.

15

Answer:

Step-by-step explanation:

angle b+45 degree=110 degree (because they are vertically opposite angle and vertically opposite angle are always equal)

angle b=110-45

angle b=65 degree

angle a + angle b + 45 degree = 180 degree (being linear pair)

angle a + 65 + 45 =180

angle a + 110=180

angle a=180-110

angle a=70 degree

angle c + 20 degree=angle a (because they are vertically opposite angle and vertically opposite angle are always equal)

angle c + 20 = 70

angle c = 70 - 20

angle c =50 degree

Note: A linear pair is a pair of adjacent angles formed when two lines intersect.

Hope this helps u !!

Answer:

The triangle will triple in size.

Step-by-step explanation:

de hecho, la respuesta está en la imagen de arriba

Answer:

38

Step-by-step explanation:

3x + 2y when X=10 and y=4

3(10) + 2(4)

30 + 8

38

Answer:

Point estimate of the corresponding population mean = $8,213

Step-by-step explanation:

Given:

Average cost of a wedding reception (x) = $8,213

Total number of sample (n) = 450

Standard deviation = $2185

Find:

Point estimate of the corresponding population mean

Computation:

Average cost of a wedding reception (x) = Point estimate of the corresponding population mean

Point estimate of the corresponding population mean = $8,213

Answer:

yes i can see the photot

Step-by-step explanation:

Answer:

the equation of the regression line will be 1

Answer:

[tex] \frac{ {2}^{4} }{ {2}^{ - 4} } \\ = {2}^{4} . {2}^{4} \\ = {2}^{8} \\ = 256[/tex]

Answer:

2⁸

Step-by-step explanation:

2⁴ ÷ 2⁻⁴ = 2⁸

if the bases are the same and you're dividing then you subtract the exponents

Answer:

x value is 3

please hear is your answer

Answer:

a. 341.902.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

n instances of a normal variable:

For n instances of a normal variable, the mean is [tex]n\mu[/tex] and the standard deviation is [tex]s = \sigma\sqrt{n}[/tex]

60 days, for each day, mean 6, variance of 12.

So

[tex]\mu = 60*6 = 360[/tex]

[tex]s = \sqrt{12}\sqrt{60} = 26.8328[/tex]

What is the 25th percentile of her total wait time over the course of 60 days?

X when Z has a p-value of 0.25, so X when Z = -0.675.

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]-0.675 = \frac{X - 360}{26.8328}[/tex]

[tex]X - 360 = -0.675*26.8328[/tex]

[tex]X = 341.902[/tex]

Thus, the correct answer is given by option A.

Answer: y=(x-5)^2-16

Answer:

Step-by-step explanation:

First, we need to use the formula -b/2a.

We get 10/2 which equals 5.

Now we have our x-coordinate. Now we need to find out y-coordinate. We have to plug 5 back in as x to get the y-variable.

5^2 - 10(5) + 9

25 - 50 + 9

34 - 50

-16

Now that we have our x and y coordinates, we can make our vertex.

(5,-16)

Finally, we need to put this into vertex form. We see that the vertex form is y = a(x-h)^2 + k. We plug the x variable into the h value and the y variable into the k value. We don't need the a variable because we are only looking for the vertex and the vertex form.

y = (x-5)^2 - 16

Walah! There is our answer!

Answer:

1. 1

2. 1/3

Explanation:

1.  6(4 - 5) ÷ 2(-3)

= 6(4−5) ÷ (2)(-3)

= 6(-1) ÷ (2)(-3)

= -6 ÷ (2)(-3)

= -6 ÷ -6

final answer = 1

2.  1/4 ÷ 3/4

1/4 ÷ 3/4 ---> 1/4 ÷ 4/3 (reciprocal method)

(change the operation to multiplication)

1/4 × 4/3 (multiply)

1/4 × 4/3 = 4/12 (we aren't done yet.. we still need to simplify/reduce 4/12)

4/12 ----> 2/6 ----> 1/3. (final answer)

Answer:

9-(-2) or 9+2

Step-by-step explanation:

To find the difference of something, subtract one value from the other. It become addition because two negatives make a positive