A researcher examines 27 sedimentary samples for bromide concentration. The mean bromide concentration for the sample data is 0.383 cc/cubic meter with astandard deviation of 0.0209. Determine the 90 % confidence interval for the population mean bromide concentration. Assume the population is approximatelynormal.Step 1 of 2: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.A chemist examines 25 geological samples for bromide concentration. The mean bromide concentration for the sample data is 0.502 cc/cubic meter with a standarddeviation of 0.0313. Determine the 98 % confidence interval for the population mean bromide concentration. Assume the population is approximately normal.Step 2 of 2: Construct the 98 % confidence interval. Round your answer to three decimal places.

The percentage of each is 0.66% , 1.65% , 2.97% , 37.21% , 37.48%, 20.1% respectively

The percentage of the total for each layer is calculated by dividing the depth of the layer in kilometers by the total depth

Percentage = (layer depth in km / total depth) × 100%

Crust= (40 / 6046) × 100 = 0.66%

Lithosphere = (100 / 6046) × 100 = 1.65%

Asthenosphere = (180/6046) × 100 = 2.98%

Mantle = (2250/6046) × 100 = 37.21%

Outer core = (2266/6046) × 100 = 37.48%

Inner core = (1210/6046) × 100  = 20.01%

The Depth in centimeters for each layer multiply the depth of the jar, 16.5 cm, by the percent you calculated for the crust

Crust = 0.66 × 16.5 cm =0.11 cm

Lithosphere = 1.65 × 16.5 = 0.27 cm

Asthenosphere = 2.98 × 16.5 = 0.49 cm

Mantle = 37.21 × 16.5 = 6.14 cm

Outer Core = 37.48 × 16.5 = 6.18 cm

Inner Core = 20.01 × 16.5 = 3.30 cm

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The question is incomplete the complete question is :

i. Divide the depth of the layer by the total depth. For example, to calculate the percentage of the total depth that the crust represents, divide 40 by 6,046.

ii. Write your answer in the Percent column.

iii. Repeat for the rest of the layers.

Use the calculator to determine the depth in centimeters for each layer. This is the depth of sand

you will put in your jar.

i. Multiply the depth of the jar, 16.5 cm, by the percent you calculated for the crust.

ii. Write your answer in the Centimeters column.

iii. Repeat for the rest of the layers.

Answer:

Below

Step-by-step explanation:

The question states "round to nearest hundredth"   ....you rounded  to nearest 10th.....   I believe you can now find the correct answer...

in fraction form it is 13  11/13

The solution for the given inequalities is z < 6 or z > 3.

The given inequalities are 4z - 5 < 29 or 4z + 3 > 15.

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

The given inequalities can be solved as follows:

4z - 5 < 29

Add 5 to both the sides of a inequality

4z - 5 + 5 < 29 + 5

4z < 24

Divide 4 to both the sides of a inequality

4z/4 < 24/4

z < 6

Solve 4z + 3 > 15

Subtract 3 to both the sides of a inequality

4z + 3 - 3 > 15 - 3

4z > 12

Divide 4 to both the sides of a inequality

4z/4 > 12/4

z > 3

So, z < 6 or z > 3

Therefore, the solution for the given inequalities is z < 6 or z > 3.

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The ratio of orange kittens to black kittens can be expressed as 5:2.

In this design, 60% is orange and the rest is black.

The colour black and orange mixed together is called tangelo. A tangelo is a fruit that is a hybrid of a grapefruit and an orange.

In a RGB color space (made from three colored lights for red, green, and blue), hex #FFA500 is made of 100% red, 64.7% green and 0% blue.

To find the ratio of orange kittens to black kittens, we can compare the number of orange kittens (5) to the number of black kittens (2).

Therefore, the ratio of orange kittens to black kittens can be expressed as 5:2.

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The study conducted by the insurance company is an example of a longitudinal study.

A longitudinal study is a research design that involves collecting data from the same group of individuals over an extended period. In this case, the researchers collected data from the same group of drivers over a 10-year period.

The purpose of this study was to identify safe drivers, and the researchers collected data from a sample of 1,000 drivers. The sample size is an essential consideration in research because it affects the accuracy and reliability of the results.

A larger sample size generally provides more accurate results than a smaller sample size.

The researchers examined the driving records of the participants over a 10-year period. Driving records typically include information such as traffic violations, accidents, and other incidents that may affect a driver's safety on the road.

By examining these records, the researchers could identify drivers who had a history of safe driving.

The findings of this study can be used by the insurance company to develop policies and pricing strategies that encourage safe driving behavior.

For example, they may offer lower premiums to drivers who have a history of safe driving.

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Answer:

1/3

Step-by-step explanation:

12-8=4

4/12 = 1/3

The source of internal invalidity reflected in this example is experimental mortality, as the drop in sample size due to soldiers being reassigned to different stations across the U.S. can lead to a decrease in statistical power and increased risk of bias in the results.

This example reflects the source of internal invalidity known as c) experimental mortality. Experimental mortality refers to the loss of participants during an experiment, which may cause issues with the overall validity of the results. In this case, the reassignment of soldiers to different stations across the U.S. caused the sample size to drop, potentially affecting the outcome of the study on the effect of group size on group morale.

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The least integer value that satisfies the inequality   \(2^{x-7} - 3\) ≥ y is 7.

Exponential function, as its name suggests, involves exponents. But note that, an exponential function has a constant as its base and a variable as its exponent but not the other way round.

Here, In the given function

            Least possible value of 2ˣ⁻⁷ is 1

                     2ˣ⁻⁷ = 2⁰

    On comparing both sides, we get

                 x-7 = 0

                  x = 7

Thus, The least integer value that satisfies the inequality   2ˣ⁻⁷-3≥ y is 7.

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Answer:

7

Step-by-step explanation:

edg 2022

Answer:

10% discount

Step-by-step explanation:

1. 625-562.5=62.5

2. 62.5/625 is 10%, so 10% discount.

*Please mark me as brainliest

Answer:

dollar

Step-by-step explanation:

Answer:

1.95x

Step-by-step explanation:

x equals the # of pounds of the strawberries

The square root of the algebra value x is 20.

Substitution in algebra simply means putting numbers where the letters are.

There are three algebra values given which are; x, y, and z

x = 2y

y = (1/4) of z

z = (1/2) of 1600

hence,

z = 1/2 × 1600

z = 800

we substitute the value of z in y = (1/4) of z

so y = 1/4 × 800

y = 200

also, we substitute the value of y in x = 2y

so x = 2 × 200

x = 400

take the square root of x and its value

√x = √400

√x = 20.

Therefore, by proper substitution of the algebra values, the square root of x is derived to be 20.

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Hence it is proved that Reece is correct.

What is meant by percentage?

%, which is a relative figure used to denote hundredths of any quantity. Since one percent (symbolized as 1%) is equal to one-hundredth of something, 100 percent stands for everything, and 200 percent refers to twice the amount specified.

Given that Reece and Sarah share some money at a ratio of 9:16

Let the total money be x.

Then, Sarah's share = x*16/25 = 0.64*x

That is 64% of the total money.

Which is greater than 60% of the total money.

Therefore, Reece is correct.

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Answer:

15.6 units (3 s.f.)

Step-by-step explanation:

The distance between 2 points is given by the formula below, where \((x_1, y_1)\) is the first coordinate and \((x_2, y_2)\) is the second coordinate.

\(\boxed{{\text{Distance between 2 points}= \sqrt{(y_1 - y_2)^{2} + (x_1 - x_2)^{2} } }}\)

Using the distance formula above,

distance between A(-3, 1) and B(7, 13)

= \(\sqrt{(13-1)^{2} + [7-(-3)]^{2} } }}\)

= \(\sqrt{12^2+(7+3)^2}\)

= \(\sqrt{244}\)

= 15.6 units (3 s.f.)

Additional:

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Answer: 108° ; 165°

Step-by-step explanation:

180(n - 2) is the formula to figure out the total degrees in a polygon.

A pentagon has 5 sides, so:

180(5-2) = 180(3) = 540°

Divide the total degrees by the number of angles (a pentagon has 5 angles):

540° ÷ 5 = 108°

24-gon:

180(24 - 2) = 180(22) = 3960°

3960° ÷ 24 = 165°

Answer: 108° ; 165°

Step-by-step explanation:

180(n - 2) is the formula to figure out the total degrees in a polygon.

A pentagon has 5 sides, so:

180(5-2) = 180(3) = 540°

Divide the total degrees by the number of angles (a pentagon has 5 angles):

540° ÷ 5 = 108°

24-gon:

180(24 - 2) = 180(22) = 3960°

3960° ÷ 24 = 165°

Answer:

5, 7, 8, 12, 13, 17, 20

Step-by-step explanation:

REMEMBER: THE MEDIAN IS THE 'MIDDLE NUMBER' OF A DATA SET

Also, in order to find the median, the numbers must be in numerical order.

Answer:

distance island dock to Dock A = 4.99 km

distance island dock to Dock K = 6.35 km

Step-by-step explanation:

Always make a scetch to visualize the situation.

You need to construct two triangle both with a streight angle, so you can use Pythagoras to calculate the unknown distances between the island dock L, and each of the other two docks A an K.

I chose to introduce an extra letter, the letter C. In total you have the letters A K L and the letter C.

The letter C has a streight angle of 90° between ACL and it has the same streight angle of 90° with KCL. It is crucial that you see that the distance of LC is exactly the same in triangle LAC and that LC has exactly the same distance in the other triangleLKC.

The distance between AK = 2.3 km.

I define the distance between K and point C as 2.3 + x, because the distance x is unknown.

KC = 2.3 + x

Further more, when you make a picture, you can see that the distance between A and point C = x.

From such a picture, it would show clearly, that K is further away in respect to L then point A. From the picture it would be clear that the angle of LKC is smaller then the angle of LAC, so LKC = 45° and LAC = 64°.

Because angle LKC = 45° and we choose C to have an angle of 90°, the TRIANGLE LKC must be a special triangle... In any triangle, the sum of the three angles together, must add up to 180° .

If that is true, then we have 45 + 90 + 45 (because that adds up to 180). Now that means triangle LKC must have two equal sides (because of the same angels of 45° ).

So we know the distance KC = LC and we already defined KC = 2.3 + x.

Now we know enough to solve the problem.

AK = 2.3 km

angle of LKC = 45°

angle of LAC = 64°

AC = x

KC = 2.3 + x

LC = KC

LC = 2.3 + x

Try to calculate the distance x by using tan. After that you can use Pythagoras to find the other distances.

tan(LKC) = ( LC ) / ( KC )

tan(LKC) = ( x+2.3 ) / ( x+2.3 )

That is not helpful. Let's try the other triangle...

tan(LAC) = LC / AC

tan(LAC) = ( x+2.3 ) / x

tan(64) = ( x+2.3 ) / x

Solve the equation which means you try to find the value for x.

x * tan(64) = ( x+2.3 )

tan(64) * x -x = 2.3

tan(64) * x - 1* x = 2.3

Try to get x outside of the braquets...

x* ( tan(64) - 1 ) = 2.3

x* (2.0503038415793 - 1 ) = 2.3

1.0503038415793 * x = 2.3

x = 2.3 / 1.0503038415793

x = 2.19

Now use Pythagoras a² + b² = c² in triangle LAC to find distance LA.

LA² = AC² + LC²

AC = x = 2.19

LC = 2.3 + x = 4.39

LA² = 2.19² + 4.39²

LA = SQRT( 4.79 + 20.16 )

LA = SQRT( 24.95 )

LA = 4.99 km

Now use Pythagoras a² + b² = c² in triangle LKC to find distance LK.

LK² = KC² + LC²

KC = 2.3 + x = 4.39

LC = 2.3 + x = 4.39

LK² = 4.39² + 4.39²

LK = SQRT( 20.16 + 20.16 )

LK = SQRT( 40.32 )

LK = 6.35 km

Answer:

I think is the first option but if not sorry:(

Step-by-step explanation:

Answer:

its how much money he will get

Step-by-step explanation:

Answer:

900

Step-by-step explanation:

1.analyze problem

2. 30/13*390

3.900

The slope of the regression line predicting y from x is 0.30.

Given that,

x              y

29          215

62          225

75          173

99         129

108        111

So, the coordinate points are (29, 215) and (62, 225)

The formula to find the slope of a line is slope = (y₂-y₁)/(x₂-x₁).

Here, slope = (225-215)/62-29)

= 10/33

= 0.30

Therefore, the slope of the regression line predicting y from x is 0.30.

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The complete equation will be 2x-7(x+10) = x-7x/2-70/2

When two expression are connected by an equal sign, then it said to be an equation.

Given that,  the equation, that it has infinitely many solutions. 2x-7(x+10) = x-?

Condition for two equations, aₓ₁+bₓ₁+cₓ₁ = 0 and aₓ₂+bₓ₂+cₓ₂ = 0 have infinitely many solutions is,

aₓ₁/aₓ₂ = bₓ₁/bₓ₂ = cₓ₁/cₓ₂

Now,

2x-7(x+10) = 2x-7x-70

2x-7x-70 = x- (given)

Completing to get a form of aₓ₁/aₓ₂ = bₓ₁/bₓ₂ = cₓ₁/cₓ₂

x-7x/2-70/2

Checking for infinitely many solutions,

aₓ₁ = 2, bₓ₁ = -7, cₓ₁ = -70, aₓ₂ = 1, bₓ₂= -7/2 and cₓ₂ = -70/2

aₓ₁/aₓ₂ = 2/1 = 2, bₓ₁/bₓ₂ = -7/-7/2 = 2 and cₓ₁/cₓ₂ = -70/-70/2

Therefore, aₓ₁/aₓ₂ = bₓ₁/bₓ₂ = cₓ₁/cₓ₂

Hence, the equations having infinitely many solutions, are 2x-7(x+10) = x-7x/2-70/2

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Answer: 18/9 if not it's something along that-

Step-by-step explanation:

7^2 = 49 so like 49-31 equals 18 and the denominator 3^2 = 9 , so if it's not 18/9 then it's like 1/2 or something bc 9 + 9 is 18 yk-

Gerry's beginning basis in the S corporation is $20,545.

To calculate Gerry's beginning basis in the S corporation, we need to consider the cost of the assets transferred and the additional expenses incurred for the conversion.

The cost of the assets transferred is given as $19,570. This represents the original cost of the assets when Gerry acquired them.

The adjusted basis of the assets is stated as $9,600. The adjusted basis takes into account any adjustments made to the original cost, such as depreciation or other deductions.

To calculate the beginning basis in the S corporation, we add the cost of the assets transferred ($19,570) to the adjusted basis ($9,600). This gives us a total of $29,170.

In addition to the assets, Gerry incurred an additional expense of $975 for the conversion to an S corporation. We include this amount in the calculation of the beginning basis.

Therefore, Gerry's beginning basis in the S corporation is $29,170 + $975 = $20,545.

This beginning basis is important for determining Gerry's tax consequences and future deductions within the S corporation structure.

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The Python methods is used to perform chi-square goodness of fit tests is option (a) chisquare from scipy.stats submodule

The chisquare method from the scipy.stats submodule in Python is used to perform chi-square goodness of fit tests. This test is a statistical technique used to determine if an observed categorical frequency distribution differs from a theoretical distribution. The chisquare method takes two arguments: the observed frequency distribution and the expected frequency distribution.

It returns the chi-square test statistic and the p-value. If the p-value is less than the significance level, we reject the null hypothesis that the observed distribution and the expected distribution are the same. This method is widely used in various fields, including biology, finance, and social sciences, to test the hypothesis about the distribution of categorical data.

Therefore, the correct option is (a) chi-square from scipy.stats submodule

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The value slope of the tangent line to the polar curve at the point specified by θ = π is slope = - (√3/6) -0.2887.

The slope of the tangent line to the polar curve at the point specified by the value of θ,  to find the derivative of the polar curve with respect to θ and then evaluate it at the given value of θ.

The polar curve is given by the equation r = cos(θ/3).

To find the derivative of r with respect to θ, the chain rule dr/dθ as the derivative of r with respect to θ.

r = cos(θ/3)

Taking the derivative of both sides with respect to θ:

dr/dθ = d/dθ(cos(θ/3))

To differentiate cos(θ/3), the chain rule. Let u = θ/3, then:

du/dθ = 1/3

The derivative as:

dr/dθ = d/dθ(cos(u)) × du/dθ

dr/dθ = -sin(u) × (1/3)

Substituting back u = θ/3:

dr/dθ = -sin(θ/3) × (1/3)

The derivative at the given value of θ = π:

slope = dr/dθ evaluated at θ = π

slope = -sin(π/3) ×(1/3)V

Since sin(π/3) = √3/2,

slope = - (√3/2) ×(1/3)

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Answer: 6/5

Step-by-step explanation:

Given the points:

(–2, –1) and (3, 5)

x1 = - 2 ; y1 = - 1 ; x2 = 3 ; y2 = 5

Slope is the change in y divided change in x

Slope = change in y / change in x

Slope = (y2 - y1) / (x2 - x1)

Slope = (5 - (-1)) / (3 - (-2))

Slope = (5 + 1) / 3 +2

Slope = 6 / 5

Answer:   It's -744.

  Multiply the first colum (-1,4) and then the second (2,-3) while also adding a zero. Remember it is both the 30 and the negative while multiplying.

     Hope this helped:)

Answer:

La fracción de la propina que todavía le queda a Pedrito es:

Step-by-step explanation:

Para obtener la respuesta, se debe realizar una resta de fracciones, en este caso la haremos de solo dos fracciones por ocasión para que quede muy bien entendido. La totalidad de la propina de Pedrito corresponde a una unidad (es decir 1 entero), por lo tanto, a ese número le restaremos lo que gastó en golosinas, lo cual es una cuarta parte o 1/4:

Una vez Pedrito ha gastado una cuarta parte en golosinas, aún le quedan tres cuartas partes o 3/4, ahora a ese número le restaremos las dos quintas partes o 2/5 que gastó en juegos:

Una vez gastadas dos quintas partes en juegos aún le quedan siete veinteavos o 7/20, por último, a este número le restaremos la octava parte o 1/8 que le regaló a su hermano menor:

Por lo tanto, al final de sus gastos y obsequios, a Pedrito le quedan 9/40 o nueve cuarentavos de su propina.