Please do number 7 please

The total number of samples will be 1109 .

Given ,

Margin of error 0.02

Here,

According to the formula,

\(Z_{\alpha /2} \sqrt{pq/n}\)

Here,

p = proportions of scientist that are left handed

p = 0.09

n = number of sample to be taken

Substitute the values,

\(Z_{0.01} \sqrt{0.09 * 0.91/n} = 0.02\\ 2.33 \sqrt{0.09 * 0.91/n} = 0.02\\\\\\\)

n ≈1109

Thus the number of samples to be taken will be approximately 1109 .

Know more about proportions,

https://brainly.com/question/31548894

#SPJ4

Answer:

1.77

Step-by-step explanation:

The square root of Pi with two digit decimal accuracy is 1.77. Accordingly, what is a square root of pi? The square root of pi is 1.777245.

Answer:

the square root of pie is 1.77245385091

or just 1.77

Answer:

\(3b^{4} + 5b^{3} + b^{2} + 5b\)

Step-by-step explanation:

\( {b}^{4} + 2 {b}^{4} + 8 {b}^{3} - 3 {b}^{3} + {b}^{2} + 5b\)

The values that represent the possible distance, d, in miles, between Lincoln, NE, and the third city are given as follows:

300 < d < 699.

A set of measurements can represent a triangle if the sum of the two smaller measurements is greater than the greater measures.

The measurements for this problem are given as follows:

Then if 500 miles is the largest distance, we have that:

x can be between 300 and 500.

If x is the largest distance, we have that:

x can be between 501 and 699.

Then the range of possible distances is given as follows:

300 < d < 699.

(which are the distances for each case).

More can be learned about set of measurements and triangles at brainly.com/question/24432457

#SPJ1

Answer:

see picture

Step-by-step explanation:

Answer:

119 is the value of x when y = 7

Step-by-step explanation:

Since y varies inversely with x, we can use the following equation to model this:

y = k/x, where

Step 1:  Find k by plugging in values:

Before we can find the value of x when y = k, we'll first need to find k, the constant of proportionality.  We can find k by plugging in 49 for y and 17 for x:

Plugging in the values in the inverse variation equation gives us:

49 = k/17

Solve for k by multiplying both sides by 17:

(49 = k / 17) * 17

833 = k

Thus, the constant of proportionality (k) is 833.

Step 2:  Find x when y = k by plugging in 7 for y and 833 for k in the inverse variation equation:

Plugging in the values in the inverse variation gives us:

7 = 833/x

Multiplying both sides by x gives us:

(7 = 833/x) * x

7x = 833

Dividing both sides by 7 gives us:

(7x = 833) / 7

x = 119

Thus, 119 is the value of x when y = 7.

Answer:

C. 6 rooms

Step-by-step explanation:

I think you means he uses 3/4 gallon for 1 room.

This is a division problem. Divide the amount of paint he has by the amount he uses to paint one room.

(4 1/2)/(3/4) = (9/2)/(3/4) = 9/2 * 4/3 = 36/6 = 6

Answer: 6 rooms

Answer:

The equation of the line that is perpendicular to the line that passes through the point (-4, 2) is y = -9·x/5 + 18

Step-by-step explanation:

The coordinates of the point of intersection of the two lines = (5, 9)

The coordinates of a point on one of the two lines, line 1 = (-4, 4)

The slope of a line perpendicular to another line with slope, m = -1/m

Therefore, we have;

The slope, m₁, of the line 1 with the known point = (9 - 4)/(5 - (-4)) = 5/9

Therefore, the slope, m₂, of the line 2 perpendicular to the line that passes through the point (-4, 4) = -9/5

The equation of the line 2 is given as follows;

y - 9 = -9/5×(x - 5)

y - 9 = -9·x/5 + 9

y =  -9·x/5 + 9 + 9

y = -9·x/5 + 18

Therefore, the equation of the line that is perpendicular to the line that passes through the point (-4, 2) is y = -9·x/5 + 18.

Based on the provided information, the expected number of tails when this coin is tossed twice is 1.96.

The expected number of tails when this coin is tossed twice can be found using the formula for expected value, which is E(X) = ∑xp(x), where x is the value of the outcome and p(x) is the probability of that outcome occurring.

Since a tail is six times as likely to occur as a head, the probability of getting a tail is 6/7 and the probability of getting a head is 1/7.

When the coin is tossed twice, there are four possible outcomes: two tails, one tail and one head, one head and one tail, and two heads. The expected value for each of these outcomes can be calculated as follows:

E(two tails) = 2(6/7)(6/7) = 72/49

E(one tail and one head) = 2(6/7)(1/7) = 12/49

E(one head and one tail) = 2(1/7)(6/7) = 12/49

E(two heads) = 2(1/7)(1/7) = 0

The expected number of tails when this coin is tossed twice is the sum of these expected values:

E(X) = 72/49 + 12/49 + 12/49 + 0 = 96/49 ≈ 1.96

Therefore, the expected number of tails when this coin is tossed twice is 1.96 (rounded to two decimal places).

Learn more about Expected value:

https://brainly.com/question/24855677

#SPJ11

A population has a mean of 180 and a standard deviation of 36. A sample of 84 observations will be taken. The probability that the sample mean will be between 181 and 185 is

Given n(sample size) = 84

Population mean(μ) = 180

Standard Deviation(σ) = 36

Standard error of the mean = σx-bar = σ/√n = 36/√84 = 36/9.165 = 3.927

Standardizing the sample mean we have

Z = (x-bar - μ)/σx-bar = (x-bar - μ)/σ/√n

x-bar = 180

Z(x-bar=185 at point C) = (185 - 180)/3.927 = 5/3.927 = 1.273

Z(x-bar=181 at point D) = (181 - 180)/3.927 = 1/3.927 = 0.254

The area ABCD is the probability that the sample mean will lie between 181 and 185.

The shaded Area ABCD = (Area corresponding to Z = 2 or x-bar = 185) - (Area corresponding to Z = 1 or x-bar = 181)

Area corresponding to Z = 1.273 = 0.898

Area corresponding to Z = 0.254 = 0.598

The shaded Area ABCD = 0.898-0.598 = 0.300

Therefore the probability that the sample mean will lie between 181 and 185 is 0.300.

To learn more about Probability, click here https://brainly.com/question/25870256

#SPJ4

This value is not fixed, and researchers can choose a different significance level based on the nature of the research and the data collected. When no significance level is given, the default is 0.05.

The value that defaults to alpha when no significance level is given is 0.05.

Significance level refers to the likelihood of an observed effect occurring by chance. It is denoted by α (alpha) and is typically set at either 0.05 or 0.01. This is the level at which we reject the null hypothesis.

Therefore, when no significance level is given, the default is 0.05. This value is generally used in social science research. It signifies that there is a 5% chance that the results could have been obtained by chance. The researcher would reject the null hypothesis if the p-value is less than 0.05.

This implies that the effect observed is statistically significant and is not due to chance. A p-value less than 0.05 indicates that the researcher is 95% confident that the effect is real and can be replicated.

Learn more about significance level:

https://brainly.com/question/30400745

#SPJ11

Probabilities of Q are 1,4, 16, 64 are 312 2 8181818 , E(Q)=20.88 and 12.5% information revealed. Wheel is spin twice 0.2815.

When we are not sure about the outcome we can make possible probabilities about the situation. Therefore, it is the maximum and possible chances of something to be happen.

Step 1

Angle of one complete spin = 360°

Q=16=90° Q=6490"

Q=4-450

Q=1=135°

Here

P(Q16) = P(Q= 64)

=90/36

=1/4

Step 2

Expected value E(Q) = xP(x) E(Q) = 1x+4x+16x+64 x2/8

Step 3

c)

We learn Q=4

P(Q=4)=1/8=0.125

12.5 %  information is revealed.

Please refer to solution in this step.

To learn more about probabilities

https://brainly.com/question/11234923

#SPJ4

Answer:

4

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opp / hyp

sin 45 = s / 4 sqrt(2)

Multiply each side by 4 sqrt(2)

4 sqrt(2) *sin 45 = s

4 sqrt(2) * 1/ sqrt(2) =s

4

Answer:

following your lead would mean that he has 6 left after the party- but that seems a bit off dont ya think

Step-by-step explanation:

After the formation of the European Union (EU), it eliminated all tariffs among its member countries. This means that there are no import taxes or duties imposed on goods traded between EU member countries.

One of the key objectives of the European Union is to create a single market among its member countries, fostering economic integration and facilitating the free movement of goods, services, capital, and people. As part of this goal, the EU implemented the elimination of tariffs among its member countries. Tariffs are taxes or duties imposed on imported goods, which can increase their cost and hinder trade.

By removing tariffs, the EU promotes the free flow of goods within its borders. This has significant benefits for businesses and consumers within the EU, as it allows for increased trade, competition, and access to a wider range of products. Eliminating tariffs encourages economic cooperation and integration among EU member countries, creating a more seamless and efficient trading environment.

Option a is incorrect because the EU does not bar imports of specific products or favor domestic companies. Option c is incorrect because the EU aims to promote trade and economic activity among its member countries rather than decreasing imports and exports. Option d is incorrect because the North American Free Trade Agreement (NAFTA) is a trade agreement between the United States, Canada, and Mexico and is not directly related to the European Union.

Learn more about taxes here:

https://brainly.com/question/12611692

#SPJ11

Answer:

g(-9)+h(-9)=59

the answer is B

Answer:

$151

Step-by-step explanation:

225 = 74 + m

- subtract 74 from both sides

225-74 = 74-74 +m

1. 151 = 74 - 74 + m

2. 151 = 0 + m

the 0 is irrelevant so you can remove it and you get

151 = m

the correct way to write it would be:

m = 151

Answer:

150 ________//_/___________///////

The gradient of the function f(x, y) = xy is a vector that represents the rate of change of the function with respect to its variables. The gradient of f is ∇f = (y, x).

The gradient of a function is a vector that contains the partial derivatives of the function with respect to each variable.

For the function f(x, y) = xy, we need to find the partial derivatives ∂f/∂x and ∂f/∂y.

To find ∂f/∂x, we differentiate f with respect to x while treating y as a constant.

The derivative of xy with respect to x is simply y, as y is not affected by the differentiation.

∂f/∂x = y

Similarly, to find ∂f/∂y, we differentiate f with respect to y while treating x as a constant.

The derivative of xy with respect to y is x.

∂f/∂y = x

Thus, the gradient of f is ∇f = (∂f/∂x, ∂f/∂y) = (y, x).

In this specific case, given that p = (3, 4), the gradient of f at point p is ∇f(p) = (4, 3).

The gradient vector represents the direction of the steepest increase of the function f at point p.

Note that v = -i - 4j is a vector that is not directly related to the gradient of f. The gradient provides information about the rate of change of the function, while the vector v represents a specific direction and magnitude in a coordinate system.

Learn more about derivative here:

https://brainly.com/question/30401596

#SPJ11

24 thats my answer to everything

Answer:the answer is C

Step-by-step explanation:

If she got 150 points remove the 0 zero and do 3x5 you get 15 then add back the zero

Answer:

The answer is A

Step-by-step explanation:

If she only threw 25 balls then it can't be C and B and D fo not equal 150 you have to multiply the amount of blue bottles in the question by the points you can get the answer.

Solution 1: Count, which is crazy long so I am going to solution 2.

Solution 2: Calculate.

I am going to split the right part to the left part result two shapes: 8x5 and 6x15

8x5 + 6x15 = 40 + 90 = 130.

Area = 130 units^2

Perimeter: 8x2 + (6x2-5)+ (15x2-5)        (Subtract 5 because the overlap area)

16 + 7 + 25 = 48

Perimeter = 48 units

The polygons are not similar because the lengths of the corresponding sides are not proportional.

A polygon is a two-dimensional flat form with straight, completely closed sides. Straight, not curved, sides are required. Polygons, on the other hand, can have any number of sides.

Dimension of the Polygon PFGW are, as follows:

Length = 15 units

Width = 6 units

Dimension of the Polygon MNQV are, as follows:

Length = 12 units

Width = 4 units

The ratio of corresponding sides :

WF/QM = 12/15

QV/GW = 4/6

Since the corresponding sides are not proportional, then both polygons are not similar.

Hence, the correct answer would be an option (B).

Learn more about the polygons here:

https://brainly.com/question/24464711

#SPJ1

The following column A and B can be matched as:

1 - b, 2 - c, 3 - d, 4 - a

Its equivalent expressions are:

x² = 1/\(x^{-2}\)

\(x^{4}\) ÷ \(x^{3}\) = \(x^{4}\) / x³ = x

(x²)² = \(x^{2+2}\) =  \(x^{4}\)

x³. x³. x³ = \(x^{3+3+3}\) = \(x^{9}\)

The symbol written above and to the right of a mathematical expression indicating the operation of raising power is called exponents.

Example:

a² and b³

2 and 3 are exponents.

We have,

x²                      \(x^{9}\)

\(x^{4}\) ÷ \(x^{3}\)               1/\(x^{-2}\)

(x²)²                   x

x³. x³. x³           \(x^{4}\)

We need to find its equivalent expressions

x² = 1/\(x^{-2}\)

\(x^{4}\) ÷ \(x^{3}\) = \(x^{4}\) / x³ = x

(x²)² = \(x^{2+2}\) =  \(x^{4}\)

x³ . x³ . x³ = \(x^{3+3+3}\) = \(x^{9}\)

Thus the following column A and B can be matched:

1 - b

2 - c

3 - d

4 - a

Learn more about exponents here:

brainly.com/question/5497425

#SPJ1

Answer:

Step-by-step explanation:

Half life means the period after which the material will have only 50% of it left, as if by magic.

Half life is given as 12 hours, so 24 hours is twice half-life.

If we start with 96 grams, after 12 hours, there will be 48 grams left.

After another 12 hours, (total of 24 hours), only half is left, namely 24 grams.

Answer:

im sry but i have no idea

Step-by-step explanation:

The estimated mean of the time for completion of race is 220 minutes where as the MAD to the mean ratio is 22.272%.

What is mean?

In statistics, the mean is one of the measures of central tendency. Another two are median and mode. Mean is  the average of the given set of data.

You interviewed a random sample of 25 marathon runners and compiled the following statistics.

Mean time to complete the race = 220 minutes and MAD = 50 minutes.

So from given data it can be concluded that

mean = 220             MAD= 50

Now we find ,

(MAD/Mean ) × 100%

= (50/220)× 100%

= (5×100)/22 %

≈ 22.272%

Hence , the estimated mean of the time for completion of race is 220 minutes where as the MAD to the mean ratio is 22.272%.

To know more about mean

    https://brainly.com/question/14532771  

#SPJ1

To make the larger sculpture with each linear dimension 75% greater, the artist needs to use 265.625% or 3.65625 times more clay than the original sculpture.

Let's assume that the original sculpture is a cube with side length x cm. Therefore, its volume would be x³ cm³.

To make the larger sculpture, each linear dimension needs to be increased by 75%, which means that each side length will become 1.75x cm. Thus, the new volume of the sculpture will be (1.75x)³ = 5.378125 x³ cm³.

To find the amount of clay required to make the larger sculpture, we need to find the ratio of the new volume to the original volume (5.378125 x³ cm³) / (x³ cm³) = 5.378125

This means that the artist needs to use 5.378125 times more clay than the original amount used to make the larger sculpture.

Therefore, to find the actual amount of clay needed, we multiply the original amount of clay by 5.378125: n cm³ x 5.378125 = 5.378125n cm³

So, the artist needs to use 3.65625 or 265.625% times more clay than the original sculpture to make the larger sculpture with each linear dimension 75% greater.

To know more about linear dimension, refer here:

https://brainly.com/question/40057#

#SPJ11

Answer:

Step-by-step explanation:

ok, it might be EF=EH since it's in the same spot as EFG~EHG

I'm sorry if I'm wrong

If we test H₀ : μ = 16 versus H₁ : μ ≠ 16 at α = 0.01, reject H₀ in favor of H₁. The correct answer is (a)

If the confidence interval for the population mean does not contain the hypothesized value in the null hypothesis, then we can reject the null hypothesis in favor of the alternative hypothesis.

In this case, the confidence interval is centered around 10.15, and it does not contain the hypothesized value of 16. Therefore, we can conclude that we have evidence to reject the null hypothesis at a significance level of 0.01 and accept the alternative hypothesis that the population mean is not equal to 16.

It is important to note that this decision is based on the confidence interval and significance level given in the question. If the confidence level or significance level were different, the decision might be different as well.

To learn more about confidence interval click on,

https://brainly.com/question/29741114

#SPJ4

Answer:

x=−3 or x=7

Step-by-step explanation:

Step 1: Factor left side of equation.

2(x+3)(x−7)=0

Step 2: Set factors equal to 0.

x+3=0 or x−7=0

x=−3 or x=7

Answer:

(-3,7)

Step-by-step explanation:

1. For Joshua's triangle; the distance of the green side of the triangle d₃ is 5.

2. For Murney's triangle, the perimeter of the triangle is 12.

3. For Grace, Abby and Chris's triangle, the perimeter of the triangle is 5 + √17 +  4√2.

4. For Chloe's triangle, the perimeter of the triangle is 11 + √65.

The distance of the triangles is calculated as follows;

For Joshua's triangle;

The length of d₁, d₂, and d₃ is calculated as follows;

d₁ = √ [(3 - 2)² + (2 - 0)²] = √5

d₂ = √ [(-1 - 3)² + (4 - 2)²] = 2√5

d₃ = √ [(-1 - 2)² + (4 - 0)²] = 5

The distance of the green side of the triangle d₃ = 5

For Murney's triangle, the perimeter of the triangle is calculated as;

BC = √ [(4 - 4)² + (6 - 2)²] = 4

AC = √ [(1 - 4)² + (2 - 2)²] = 3

AB = √ [(4 - 1)² + (6 - 2)²] = 5

Perimeter = 4 + 3 + 5 = 12

For Grace, Abby and Chris's triangle, the perimeter of the triangle is calculated as;

AC = √ [(-3 - 2)² + (2-2)²] = 5

BC = √ [(1 - 2)² + (2 + 2)²] = √17

AB = √ [(1 + 3)² + (2 + 2)²] = 4√2

Perimeter = 5 + √17 +  4√2

For Chloe's triangle, the perimeter of the triangle is calculated as;

AC =  √ [(-3 - 4)² + (2-2)²] = 7

BC =  √ [(4 - 4)² + (6-2)²] = 4

AB =  √ [(4 + 3)² + (6-2)²] = √65

Perimeter = 7 + 4 + √65 = 11 + √65

Learn more about perimeter of triangle here: https://brainly.com/question/24382052

#SPJ1