a paired samples test for the difference between two means can be used for segmentation purposes. true false

To solve the equation 2y − 2.3 = 4.1  for y, we can use algebraic manipulation.

In order to remove the constant term on the left-hand side of the equation, we first add 2.3 to both sides of the equation:

                                 2y - 2.3 = 4.1

                     +2.3                          +2.3

                                   2y = 6.4

Now, we divide both sides by 2 to isolate y:

                                 2y = 6.4

                            ÷2               ÷2

                                  y = 3.2

So, the solution to this equation is  y = 3.2

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We need to isolate the variable on one side of the equation in order to solve an equation like this. By carrying out the same method on both sides of the equation, we can do this. In this example, we divided both sides by 2 to isolate y after adding 2.3 to both sides to remove the constant term on the left-hand side.

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- A term in an algebraic equation that has no variables and is steady is known as a constant term in mathematics. A constant is a fixed, unchanging value. A constant in algebra can be a number on its own or sometimes a letter like a, b, or c to show a fixed integer.

- To separate y from all other terms in an equation, the equation must be rewritten so that y is on one side and all other terms are on the other side. It allows us to calculate the value of y and solve for it.

- Mathematical operations including addition, subtraction, multiplication, and division are used to rearrange algebraic expressions or equations to try to simplify or solve them. This process is known as algebraic manipulation. By doing the opposite operations (undoing) to any equation, algebraic manipulation tries to isolate a variable or simplify an expression in order to solve for a certain variable.

It will take approximately 3.9 hours from noon for 90% of the population to hear the rumor, which means they will have heard it by approximately 3:00 PM.

By noon, half of the town's population, which is 3500/2 = 1750, has heard the rumor. This means that 1750 - 280 = 1470 people heard the rumor between 8AM and noon. Therefore, the number of people who have yet to hear the rumor is 3500 - 1750 = 1750.

To find out when 90% of the population will have heard the rumor, we can use the formula:

(people who have heard the rumor) / (total population) = 0.9

Solving for the number of people who need to hear the rumor, we get:

(0.9)(3500) = 3150

To find out how many people need to hear the rumor from noon onwards, we subtract the number of people who have already heard it:

3150 - 1750 = 1400

To find out how long it will take for 1400 more people to hear the rumor, we can use the ratio:

(number of people who hear the rumor per hour) / (total population) = (1400 / 1750)

Solving for the number of people who hear the rumor per hour, we get:

(number of people who hear the rumor per hour) = (1400 / 1750) * (1 / k)

where k is the number of hours it takes for 90% of the population to hear the rumor. Solving for k, we get:

k = (1400 / 1750) * (1 / (number of people who hear the rumor per hour))

Plugging in the value of 280 for the number of people who heard the rumor from 8AM to noon, we get:

\(k = (1400 / 1750) * (1 / ((1470 + 280) / 4))\)

k = 3.86

Therefore, it will take approximately 3.9 hours from noon for 90% of the population to hear the rumor, which means they will have heard it by approximately 3:00 PM.

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A parabola is a curved form that represents the graph of a quadratic function. The vertex of a parabola is one of its focal points. The highest or lowest point on the graph corresponds to it. Consider it similar to the parabola's endpoint.

What does the term "quadratic function" mean?

A quadratic function has the formula f(x) = ax2 + bx + c, with a, b, and c being integers and a not equal to zero. A parabola is the shape of a quadratic function's graph.

                 The basic "U" shape of a parabola is the same whether it opens upward or downward, or with a different "width" or "steepness."

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The combined gas law for a gas is discussed below.

Given is the combined gas law.

The ideal combined gas law is given by →

PV = nRT

Where -

{P} = pressure     {T} = temperature     {V} = volume    

{n} = number of moles   {R} = gas constant

Non ideal gases are often modelled by the Van der Waals equation as →

(p + n²a/V²)(V - nb) = nRT

Where -

{a} and {b} = constants for a particular gas

{p} = pressure       {v} = volume    

{n} = number of moles       {t} = temperature  

{R} = gas constant

Therefore, the combined gas law for a gas is discussed above.

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Answer:

Circumference = 14π feet, Area = 49π square feet

Explanation:

Given that the diameter of the circular flower bed = 14 feet.

First, find the radius of the circle:

(a)Circumference

The circumference of a circle of radius r is calculated using the formula:

Substitute r=7:

The circumference is 14π feet.

(b)Area

The area of a circle of radius r is calculated using the formula:

Substitute r=7:

The area is 49π square feet.

The first option is correct.

Answer:

Hope I Helped

Step-by-step explanation:

16 us tablespoons

The form of a system of inequalities that would allow you to solve for the number of each type of animal that can be won is 10x + 6y = 12.

Given:

A carnival has a game where players can win stuffed animals. the rules allow for players to win no more than 10 small animals, no more than 6 large animals, and no more than 12 total animals.

x be the number of small animals and y be the number of large animals

The number of small animals = 10x

Number of large animals = 6y

The equation:

= 10x + 6y = 12.

Therefore the form of a system of inequalities that would allow you to solve for the number of each type of animal that can be won is 10x + 6y = 12.

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Answer: A

Step-by-step explanation:

Answer:

B correct me if i am wrong!

Step-by-step explanation:

the answer is b. explanation............

Solving for Cartesian product n(B), we have n(B) = 72 / 24 = 3.

The Cartesian product is a mathematical operation that takes two sets and produces a set of all possible ordered pairs of elements from both sets.

In other words, if A and B are two sets, their Cartesian product (written as A × B) is the set of all possible ordered pairs (a, b) where a is an element of A and b is an element of B.

For example, if A = {1, 2} and B = {3, 4}, then A × B = {(1, 3), (1, 4), (2, 3), (2, 4)}.

By the question.

We know that n (Ax B) represents the number of elements in the set obtained by taking the Cartesian product of sets A and B.

Using the formula for the size of the Cartesian product, we have:

n (Ax B) = n(A) x n(B)

Substituting the given values, we get: 72 = 24 x n(B)

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Answer:

(-2, 1)

Step-by-step explanation:

Putting in -2 as an input basically means plugging in -2 in the place of x

So it would result in this

y = -3(-2) - 5

Remember that multiplying a negative number by another negative number results in a positive number

y = 6 - 5

y = 1

So we have

x = -2

y = -1

Making the answer (-2, 1)

Answer:

$20384

Step-by-step explanation:

8.32*25*14*7=20384 .

Answer:

x = 36 degrees

Step-by-step explanation:

We can use exterior angles theorem to find that 140 degrees is equal to x plus 104 degrees. We subtract 104 degrees on both sides and get that x is 36 degrees.

Answer:

the answer is 7,184.47

Step-by-step explanation:

the number of cans that would be needed to cover the  pizza slice that is in form of a sector is 42 cans.

A sector is said to be a part of a circle made of the arc of the circle along with its two radii.

To calculate the number of cans that would be needed to cover the slice, we use the formula below

Formula:

Where:

Given:

Substitute these values into equation 1

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The empirical probability of drawing the cards will be 6 / 55.

The ratio of the number of outcomes in which a defined event occurs to the total number of trials, not in a theoretical sample space but in a real experiment, is the empirical probability, relative frequency, or experimental probability of an event.

Given that a card is drawn one at a time from a well-shuffled deck of 52 cards. In 13 repetitions of this experiment, 1 king is drawn.

The number of kings in a well-shuffled deck consists of 52 cards which is 4.

The number of ways of drawing consists of 4 kings in 13 repetitions which is ¹³C₄.

In 13 repetitions, 2 kings are drawn by ¹³C₂ ways,

The empirical probability will be calculated as,

P(E) = ¹³C₂ / ¹³C₄

P(E) = [ (13!) / (13-2)! ] ÷ [ (13!) / ( 13-4)!(4!) ]

P(E) = ( 4 x 3 ) / ( 11 x 10)

P(E) = 6 / 55

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With 60 chances and a 1.5% chance of success per trial, your odds of receiving the desired thing at least once are approximately 51.84% by using the probability.

The probability of not receiving the desired thing in a single chance is 98.5% (100% - 1.5%). To find the probability of not receiving the desired thing in all 60 chances, we multiply this probability by itself 60 times, since each chance is independent.

P(not receiving in 60 chances) = (0.985)^60 = 0.4816

To find the probability of receiving the desired thing at least once, we subtract the probability of not receiving it from 1:

P(receiving at least once) = 1 - P(not receiving in 60 chances) = 1 - 0.4816 = 0.5184

With 60 chances and a 1.5% chance of success per trial, your odds of receiving the desired thing at least once are approximately 51.84%. This means that, statistically speaking, you have a slightly better chance of receiving the desired thing than not receiving it. However, it is important to note that probabilities are not guarantees, and in practice, the outcome may vary from the expected value due to random chance.

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The y-intercept of Josh's car trip is 160.

The slope of Josh's car trip is 40.

The y-intercept of the equation y = 1/3(x) + 6 is 6.

The slope of the equation y = 1/3(x) + 6 is 1/3.

The y-intercept of the table of value is 600.

The slope of the table of value is 50.

The y-intercept of the equation y - 3x = 2 is equal to 2.

The slope of the equation y - 3x = 2 is equal to 3.

Mathematically, the slope-intercept form of the equation of a straight line is given by this mathematical expression;

y = mx + c

Where:

In Mathematics, the slope of any straight line can be determined by using this mathematical equation;

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (160 - 0)/(4 - 0)

Slope (m) = 40.

For the table, we have:

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (650 - 600)/(1 - 0)

Slope (m) = 50.

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Since (2, 1) is the midpoint of CD, we can use the midpoint formula to find the coordinates of point D.

The midpoint formula states that the coordinates of the midpoint M between two points A and B are:

M = ((x_A + x_B)/2, (y_A + y_B)/2)

In this case, we know that point C has coordinates (6, 8), and the midpoint between C and D is (2, 1). Therefore, we can set up two equations using the midpoint formula:

(6 + x_D)/2 = 2 (for the x-coordinates)

(8 + y_D)/2 = 1 (for the y-coordinates)

Solving for x_D and y_D, we get:

6 + x_D = 4 => x_D = -2

8 + y_D = 2 => y_D = -6

Therefore, the coordinates of point D are (-2, -6).

Step-by-step explanation:

I think the answer is like this

Answer:

Area = 6x^2 + 9x - 15.

Step-by-step explanation:

Its area = height * width

= 3 *  (2x2 + 3x – 5)

=  6x^2 + 9x - 15.

Answer:

one of the quantities is a constant multiple of the other, or equivalently if they have a constant ratio

Step-by-step explanation:

The best conclusion from this hypothesis test in the context of the problem is that we can reject the null hypothesis. The null hypothesis for this problem is that the errors is not greater than the population mean.

The null hypothesis for this problem is that the population mean number of errors for the ethanol group is not greater than the population mean number of errors for the placebo group.

In other words, the null hypothesis is: H₀: μe ≤ μp. The alternative hypothesis is that the population mean number of errors for the ethanol group is greater than the population mean number of errors for the placebo group. In other words, the alternative hypothesis is: H₁: μe > μp.

The p-value is the probability of getting a test statistic at least as extreme as the one observed, assuming the null hypothesis is true. In this case, the p-value is 0.0106, which is less than the significance level of 0.01. This means that the observed test statistic is significant at the 1% level, and we reject the null hypothesis.

Therefore, we conclude that there is evidence to suggest that the population mean number of errors for the ethanol group is greater than the population mean number of errors for the placebo group.

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Answer:

pic monga ulit ang labo kasi wh

To form a system of equation from a word problem, we must recognize different variables to form different equations.

Let a represent the number of child tickets.

Let b represent the number of adult tickets.

We're given:

Because we're given that a and b in total is 163, we can form the following equation:

\(a+b=163\)

We're also given that the total sales made is $1221.80. Because we know that 1a = $6.20 and 1b = $9.40, we can also form the following equation:

\(6.2a+9.4b=1221.8\)

Here are our two equations:

\(a+b=163\)

\(6.2a+9.4b=1221.8\)

We can solve using the method of elimination. Multiply both sides by 6.2 in the first equation:

\(6.2(a+b)=6.2(163)\\6.2a+6.2b=1010.6\)

Subtract this new equation from the second equation to cancel out a:

\(\hspace{10}6.2a+9.4b=1221.8\\- 6.2a+6.2b=1010.6\\\rule{100}{0.5}\\3.2b=211.2\)

Solve for b:

\(b=66\)

Therefore, the number of adult tickets sold is 66.

66

Answer:

59 degrees. (A)

Step-by-step explanation:

Corresponding angles are equal.

Answer:

A) 59°

Step-by-step explanation:

Since both lines are parallel to the other line, the angle has to be the exact same as the one shown above it.

Using the Mean and median formulae ,

The difference between the mean and median score of the students' scores on this quiz is 3.

Mean : The mean is the number which we get by dividing the sum of a set of values by the number of values in the set.

Median: the median is the middle number in a set of values when those values are arranged in either ascending or descending order.

let us consider there are a total 100 students.

and X denotes the marks obtained by students.

We have given that,

10% of student scored 70 points i.e.,

P(X=70) = 10% of 100 = 10

35% of students scored 80 points i.e., number of students whose obtained 80 points

= 35% of 100 = 35

30% of students scored 90 points , number of students whose obtained 90 points

= 30% of 100 = 30

remained ( 25%) of students scored 100 points

= 100 - 10 - 35 - 30 = 25

total marks obtained by students

= 80+70+90+100

= 340

Mean of score of students'scores on the quiz

= (70×10+ 80×35 + 90×30 + 100×25)/100 = 87

when we arranged the in ascending students in order , the 50th and 51th student lies in middle and marks obtained by both (50th and 51th) is 90 points .

So, Median score of the students' scores on this quiz = 90

Now, we shall calculate the difference between mean and median of score of the students' scores on this quiz which is equal to( 90 -87)

= 3

Hence, difference between the mean and median score of the students' scores on this quiz = 3

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Answer:

(2.67,-8)

Step-by-step explanation:

You first make x 0 so it is -3x0 to cancel that out to find y. You then see that you get -y=8 so you make y positive by moving the negative to the other side to get y = -8. Then, you do the same type of process for x and get 2.67. I could be wrong but wanted help as much as I could!