Please help! Correct answer only!
Out of 250 tickets in a raffle, one ticket will win a $190 prize, one ticket will win a $120 prize, one ticket will win a $90 prize, and one ticket will win a $50 prize. The rest will win nothing. If you have a ticket, what is the expected payoff?


$____

There are 12 different ways to vote for Jenny.

Jenny has been given a list of 4 bands and asked to place a vote. Her vote must have the names of her favorite and second favorite bands from the list.

How many different ways can someone vote?The sequence matters and repetitions are not permitted when choosing two options out of four.

Therefore, we may use the permutation formula P(n, r) = n! / (n - r)! to find the number of possible methods of voting. Here, r = 2 and n = 4 respectively.P(4, 2) = 4! / (4 - 2)! = 4! / 2! = 24 / 2 = 12

There are twelve ways to support Jenny.

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Answer:

alternate interior angles

Step-by-step explanation:

The angles are alternate interior angles

They are between the parallel lines and on opposite sides of the transversal

Answer:

Its 67.9 but technically its 67.912 *hope this helps

Step-by-step explanation:

Right scalene triangle.

Sides: a = 66   b = 16   c = 67.912

Area: T = 528

Perimeter: p = 149.912

Semiperimeter: s = 74.956

Angle ∠ A = α = 76.373° = 76°22'23″ = 1.333 rad

Angle ∠ B = β = 13.627° = 13°37'37″ = 0.238 rad

Angle ∠ C = γ = 90° = 1.571 rad

Height: ha = 16

Height: hb = 66

Height: hc = 15.55

Median: ma = 36.674

Median: mb = 66.483

Median: mc = 33.956

Inradius: r = 7.044

Circumradius: R = 33.956

Vertex coordinates: A[67.912; 0] B[0; 0] C[64.142; 15.55]

Centroid: CG[44.018; 5.183]

Coordinates of the circumscribed circle: U[33.956; 0]

Coordinates of the inscribed circle: I[58.956; 7.044]

Exterior (or external, outer) angles of the triangle:

∠ A' = α' = 103.627° = 103°37'37″ = 1.333 rad

∠ B' = β' = 166.373° = 166°22'23″ = 0.238 rad

∠ C' = γ' = 90° = 1.571 rad

The polynomial -3x^3 + 2 has only one turning point.

A turning point is a point on a curve where the curve changes direction, either from going up to going down or vice versa. In other words, it is a point where the first derivative of the curve changes sign.

For the polynomial -3x^3 + 2, the first derivative is given by:

d/dx (-3x^3 + 2) = -9x^2

Since the first derivative is a monotonically decreasing function (that is, its slope is always negative), the polynomial -3x^3 + 2 has only one turning point.

Slope of first derivative

d²(-3x^3 + 2)/dx² = -18x

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Answer:

domain= x axis range= y axis

\(<marquee>Give:/u Name\)

Answer:

2000

Step-by-step explanation:

Answer:

  each coordinate is multiplied by 1/3

Step-by-step explanation:

Each point on the graph is moved to a distance from the origin that is its previous distance multiplied by the scale factor. This means every coordinate value is multiplied by the scale factor.

For example, a coordinate of (3, -9) scaled by 1/3 will become ...

  (1/3)(3, -9) = (1, -3)

__

Additional comment

If your scale factor is 1/3, often you will find that coordinates of the larger image are all multiples of 3. This makes relocating them to 1/3 their original distance fairly easy. Even if they're not, you still move each point to 1/3 its original distance. The new point will be on the line segment joining the center of dilation (the origin) with the original point.

The attached graph is an illustration of dilation by a factor of 1/3.

7x-5=6x+4

first take like terms,

7x-6x=4+5

from the above, when a term moves to the other side, the sign automatically changes. therefore, we +6x becomes -6x and -5 becomes +5

7x-6x=4+5

1x= 9

x= 9/1

x=9

answer is 9.

The number can be -3, -2, -1, 0 ,1

Here, we are given that twice a number is increased by three and the result is between negative three and seven.

Let the number be x

Twice of the number = 2x

Four more than twice the number = 2x + 4

This number is between -3, 7

⇒ -3 < 2x +4 < 7

subtracting 4 from both sides we get

-3 -4 < 2x < 7 - 4

-7 < 2x < 3

Dividing both sides by 2 we get

-7/2 < x < 3/2

- 3.5 < x < 1.5

Thus the original number lies between -3.5 and 1.5

This means that it can take 5 values-

-3, -2, -1, 0 ,1

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a) State the null and alternative hypothesis:

Null Hypothesis (H0): There is no relationship between income category and the fraction of families with more than two children.

Alternative Hypothesis (Ha): There is a relationship between income category and the fraction of families with more than two children.

b) State the observed values:

The observed values can be obtained from the provided data table:

Number of Children      Salary under $10,000   Salary between $10,000-$25,000   Salary over $25,000   Total

Two or less                    11                                      13                                           21                                  45

More than 2                   68                                      28                                           105                                201

Total                               79                                      41                                           126                                150

c) State the expected values:

To calculate the expected values, we assume that there is no relationship between income category and the fraction of families with more than two children. The expected values can be calculated by finding the row and column totals and using the formula: (row total * column total) / grand total.

Using the formula, we can calculate the expected values for each cell in the table.

d) Give a p-value:

To determine the p-value, we need to perform a chi-squared test of independence. The test will provide us with a test statistic and the corresponding p-value. You can calculate the p-value using the chisq.test() function in R Studio or any other statistical software.

e) Give a conclusion for the hypothesis test:

After obtaining the p-value, compare it to the chosen significance level (e.g., 0.05). If the p-value is less than the significance level, reject the null hypothesis and conclude that there is a relationship between income category and the fraction of families with more than two children. If the p-value is greater than or equal to the significance level, fail to reject the null hypothesis and conclude that there is no relationship between income category and the fraction of families with more than two children.

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We need to  know about margin of error to solve the problem. The factors that influence margin of error are confidence level and sample size.

Margin of error is a statistic expressing the amount of random sampling error in the results of a survey. The larger the margin of error, the less confidence one should have that a poll result will reflect the result of a census of the entire population. Margin of error is influenced by three factors, confidence level, sample size and population standard deviation. In absence of population standard deviation, the margin of error is influenced by confidence level and sample size.

Therefore the margin of error is influenced by confidence level and sample size.

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Answer:

a) 18 students per teacher

b) 9 students per tutor

c) 7 tutors

Step-by-step explanation:

An arts academy requires there to be 6 teachers for every 108 students and 5 tutors for every 45 students.

a) How many students does the academy have per​ teacher?

6 teachers = 108 students

1 teacher = x

Cross Multiply.

6x = 108

x = 108/6

x = 18 students per teacher

b) Per​ tutor?

5 tutor = 45 students

1 tutor = x

Cross Multiply

5x = 45

x = 45/5

x = 9 students

= 9 students per tutor

c) How many tutors does the academy need if it has 63 students​?

45 students = 5 tutors

63 students = x

Cross Multiply

45x = 63 × 5

x = 63 × 5/45

x = 7 tutors

Answer:

x = 5

Step-by-step explanation:

5x = 2 + 23

5x = 25

x = 5

Hope that helps!

Answer:

I don't know lol

Answer:

719.19 ( if the radius is 8cm and the height is 19 cm, i couldn't rlly see the numbers)

Step-by-step explanation:

Multiply the radius by Pi (3.14) then multiply that number by the height and you should have your answer.

Hope this helped! Have a great evening!

9514 1404 393

Answer:

  x > -5

Step-by-step explanation:

  (2/5)(x -1) < (3/5)(x +1) . . . . . given

  2(x -1) < 3(x +1) . . . . . . . . . . .multiply by 5

  2x -2 < 3x +3 . . . . . . . . . . .  eliminate parentheses

  -5 < x . . . . . . . . . . . . . . . . . . add -2x-3 to both sides

This matches the second answer choice: x > -5.

Answer:

I can help!

Step-by-step explanation:

What fractions do you need to simplify?

Answer:

Step-by-step explanation:

4/8=1/2

5/10=1/2

50/100=1/2

3/4= can't be simplified

Hint:

Take any fraction, like 7/28.

the numerator and denominator ( N and D) are divisible by 7.

7/28=1/4

Try simplifying the following fractions:

6/36

5/25

7/49

9/81

Answer:

I think it's (A). 5

I don't know

Answer:

5/8 > 1/2

Step-by-step explanation:

No need number line. Just use fraction walls

Answer:

Only 4 I think, can I have branliest

Step-by-step explanation:

Answer:

i think its 4

Step-by-step explanation:pls mark branliest

Answer:

3 blue cups and 9 red cups

Step-by-step explanation:

it needs to be in a ratio of 1:3 so for every 1 cup of blue there is 3 cups of red.

its the same ratio as the other two

To organize the provided data, we can create a table comparing the samples of couples with children (sample 1) and childless couples (sample 2) as follows:

Sample Sample Size Sample Mean Sample Standard Deviation

1 78 51.1 4.7

2 94 45.2 12.1

In this table, we have listed the sample number (1 and 2), the sample size (number of couples in each group), the sample mean (average Marital Satisfaction Inventory score), and the sample standard deviation (measure of variability in the scores) for each group. This organization allows us to compare the data and proceed with hypothesis testing on the difference in population means between the two groups.

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Answer:

73% = parameter

68% = statistic

Step-by-step explanation:

Parameter and statistic differs from one another in statistical parlance in that, parameter refers to nemwrical characteristic derived from the population data. In the scenario described above, 73% describes the percentage of all registered Voters (population of interest). On the other hand, statistic refers to numerical characteristic derived from the sample data. 68% represents the percentage of democrats from the sample surveyed from the the larger population.

Hence,

68% is a sample statistic and 73% is a population parameter.

The distribution that the residuals in our model to follow is equals to the normal probability distribution. So, option(a).

Because residuals are defined as the difference between any data point and the regression line, they are sometimes called "errors". An error in this context does not mean that there is anything wrong with the analysis. In other words, the residual is the error that is not described by the regression line. The residue(s) can also be expressed by "e". The formula is written as, Residual = Observed value – predicted value or

\(e = y – \hat y \).

In order to draw valid conclusions from your regression, the regression residuals should follow a normal distribution. The residuals are simply the error terms or differences between the observed value of the dependent variable and the predicted value. Therefore, the residuals should have a normal distribution.

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Complete question:

we desire the residuals in our model to have which probability distribution? select answer from the options below

a) normal

b) binomial

c) poisson

Answer: 67.5

Step-by-Step:

If Helen has 90 stamps, then 50% of what she has is 45 stamps.  Half of 45 is 22.5 which is 25% of what Helen has. To find out how many stamps Peggy has, we'll have to do 90 - 22.5 which is 67.5.

The largest head diameter that can accommodate the clientele is 8.5743

Mean, u = 6.4

Standard deviation = 0.9

We must utilize the inverse of the common normal table to obtain our values.

the smallest head width possible.

P(Z < z) = 1.4%

P(Z < z) = 0.014

P(Z < -2.0749) = 0.014

z = -2.0749

Using the z-score calculation,

(x - μ) ÷ σ = \(Z_{0.019}\)

Let x be the heads' breath.

Making x the focus of the equation,

x = z × σ + μ

We already have:

z = -2.0749

u = 6.5

s.d = 1

Replacing numbers,

x = (-2.0749 × 1) + 6.5

x = 4.4251

The clientele requires a minimum head breadth of 4.4251.

The largest head width that can be accommodated.

P(Z > z) = 1.4%

1 - P(Z < z) = 0.014

P(Z < z) = 1 - 0.014 = 0.981

P(Z < 2.0749) = 0.981

Using the z-score calculation,

(x - μ) ÷ σ = \(Z_{0.019}\)

Let x be the heads' breath.

Making x the focus of the equation,

x = z × σ + μ

z = 2.0749

u = 6.5

s.d = 1

Substituting figures,

x = (2.0749 × 1) + 6.5

x = 4.4251

x = 8.5743

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