Help me Help pls!!!!

Answer:

15

Step-by-step explanation:

(a) The likelihood of choosing at random a traveller who states that her decision to take a certain trip is affected by her opinion of the safety of the airline and that she is not interested in learning the aircraft's age is 0.742.

(b) The probability of randomly selecting a member of the traveling public  that she says that flight selection is neither influenced by perceptions of airline safety nor does she want to know the age of the aircraft is 0.31.

(c)The probability of randomly selecting a member of the traveling public  that he says that flight selection is not influenced by perceptions of airline safety and he wants to know the age of the aircraft is 0.273

According to the given information,

(a) We are aware that 30% of travellers claim that views of airline safety have an impact on their decision to book a ticket.

As a result, there is a 0.3 percent chance of picking a random traveler who has this attribute.

The 30% that are influenced by perceptions of airline safety,

we also know that 86% want to know the age of the aircraft.

Therefore, the likelihood of picking at random a traveller who is concerned about airline safety and requests information on the age of the aircraft is,

⇒ 0.3 x 0.86 = 0.258.

Now,

To find the probability of randomly selecting a member of the traveling public that is influenced by perceptions of airline safety but does not want to know the age of the aircraft,

We can subtract the probability of the previous scenario from 1.

The probability of randomly selecting a member of the traveling public that is influenced by perceptions of airline safety and does not want to know the age of the aircraft is therefore,

⇒ 1 - 0.258 = 0.742 or 74.2%.

(b) We know that 30% of the traveling public say that their flight selections are influenced by perceptions of airline safety and 39% want to know the age of the aircraft.

Therefore,

The likelihood of choosing at random a traveller who claims that airline safety perceptions impact their choice of trip or inquires about the aircraft's age is,

⇒ 0.3 + 0.39 = 0.69.

We may deduct the likelihood of the above scenario from 1 to get the likelihood of picking a randomly chosen traveller who claims that her decision on a trip is not impacted by her opinion of the airline's safety or her desire to know the age of the aircraft.

The probability of randomly selecting a member of the traveling public that says flight selection is neither influenced by perceptions of airline safety nor does she want to know the age of the aircraft is therefore,

⇒  1 - 0.69 = 0.31 or 31%.

(c) We know that 30% of the traveling public say that their flight selections are influenced by perceptions of airline safety.

Therefore, the probability of randomly selecting a member of the traveling public who says that flight selection is not influenced by perceptions of airline safety is,

⇒ 1 - 0.3 = 0.7

Of the traveling public, we also know that 39% want to know the age of the aircraft.

So the probability of randomly selecting a member of the traveling public who wants to know the age of the aircraft is 0.39.

To determine the likelihood of choosing at random a traveller who claims that views of airline safety have no impact on flight selection and requests information on the age of the aircraft,

we can multiply the probabilities of the two events,

The probability of randomly selecting a member of the traveling public who says that flight selection is not influenced by perceptions of airline safety and wants to know the age of the aircraft is therefore,

⇒  0.7 x 0.39 = 0.273 or 27.3%.

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Answer:

b & e

Step-by-step explanation:

The statements that are true of the given function are f(0)=3/2 and f(4)=7/2. This can be obtained by finding the function and checking the values of given in the question.

Given, f(-1/2)= -2

f(0)= 3/2

f(1)= -1

f(2)= 1

f(4)= 7/2

The function is of the form, f(x)= mx +b

where m is the slope of the line and b is the cutting point with the y axis.

For x=0, the value of the function is f(0)=3/2

⇒b=3/2   and m=1/2

∴ The function is f(x) = (1/2)x + 3/2

f(-1/2) = (1/2)(-1/2) + 3/2 =5/4

f(0) = (1/2)(0) + 3/2 = 3/2

f(1) = (1/2)(1) + 3/2 = 2

f(2) = (1/2)(2) + 3/2 = 5/2

f(4) = (1/2)(4) + 3/2 = 7/2

Hence the statements that are true of the given function are f(0)=3/2 and f(4)=7/2.

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The expected value or average number of times a customer visits the store in a month is 1.60 times. So, the expected value for the average number of times a customer visits the store is 1.6 times.

To find the expected value, we need to multiply each possible outcome by its probability and then add them up. Let's assume that these numbers represent the number of times a customer visits a store in a month. We can see that the probabilities are not given, so we will assume that each outcome is equally likely.

Expected value = (0 x 0.10) + (1 x 0.40) + (2 x 0.30) + (3 x 0.20)
Expected value = 0 + 0.40 + 0.60 + 0.60
Expected value = 1.60

Therefore, the expected value or average number of times a customer visits the store in a month is 1.60 times.

To find the expected value of the average number of times a customer visits the store, you'll need to multiply each visit frequency by its respective probability and then sum up the results. Here's the calculation using the provided data:

Expected Value = (0 * .10) + (1 * .40) + (2 * .30) + (3 * .20)

Expected Value = (0) + (0.4) + (0.6) + (0.6)

Expected Value = 1.6

So, the expected value for the average number of times a customer visits the store is 1.6 times.

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Answer: 3g - 5 = 19 ; 8 pounds

Step-by-step explanation:

Given that :

Difference between weight of 3 gallons of a liquid and a brick that weighs 5 pounds = 19 pounds.

Mathematically,

Let one gallon of the liquid = g

Hence,

(3 × g) - 5pounds = 19 pounds

3g - 5 = 19

The weight of one gallon(g) of the liquid equals :

From the expression above :

3g - 5 = 19

3g = 19 + 5

3g = 24

Divide both sides by 3

3g/3 = 24 /3

g = 8 pounds

Hence, weight of 1 gallon of the liquid is 8 pounds.

Answer:

Step-by-step explanation:

Answer:

The answer is C

I turned it in and it was correct

Step-by-step explanation:

Please mark brainliest

Answer:

c

Step-by-step explanation:

Answer:

\(n = \frac{l-a}{d}+1\)

Step-by-step explanation:

\(l= a+(n-1)d\\\)

\(l -a =(n+1)d\)

Divide both sides of the equation by d

\(\frac{l-a}{d} = \frac{(n-1)}{d}\\ \\\frac{l-a}{d} = n-1\\\\\frac{l-a}{d}+1 = n\)

To sketch the region enclosed by the curves y = cos(x) and y = sin(2x) for the interval 0 ≤ x ≤ 2, we can follow these steps:

1. Plot the graphs of the two functions separately on the given interval.

For y = cos(x):

- Start by marking key points on the graph: (0, 1), (π/2, 0), (π, -1), (3π/2, 0), (2π, 1).

- Connect the points smoothly to create a curve that oscillates between 1 and -1.

For y = sin(2x):

- Start by marking key points on the graph: (0, 0), (π/4, 1), (π/2, 0), (3π/4, -1), (π, 0), (5π/4, 1), (3π/2, 0), (7π/4, -1), (2π, 0).

- Connect the points smoothly to create a curve that oscillates between 1 and -1, but with twice the frequency of the cosine curve.

2. Identify the region enclosed by the curves.

- The region enclosed by the curves is the area between the two curves from x = 0 to x = 2.

3. Shade the region enclosed by the curves.

- Shade the area between the two curves on the interval 0 ≤ x ≤ 2.

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Answer:

12.5% chance. it's a 50% chance each time, which is half, so you divide it in half 3 times, 12.5%.

Step-by-step explanation:

Answer:  I hope I'm right

Step-by-step explanation:

12.5%

The numerator of the simplified sum x/(x^2) + 3x + 2 is 1/x + 3x + 2.

To simplify the sum x/(x^2) + 3x + 2, we can use the following steps:

1. Combine like terms:

x/(x^2) + 3x + 2 = x/(x^2) + 3x + 2

2. Simplify the fraction x/(x^2):

x/(x^2) + 3x + 2 = 1/x + 3x + 2

3. The numerator of the simplified sum is 1/x + 3x + 2.

So, the numerator of the simplified sum x/(x^2) + 3x + 2 is 1/x + 3x + 2.

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Answer:

slope=7/8

Step-by-step explanation:

8-1/10-2= 7/8

Answer:

Lucía no tiene que cambiar ya la bicicleta porque ha recorrido 18,720 km.

Step-by-step explanation:

Para determinar la respuesta tienes que encontrar la cantidad de km que Lucía ha hecho en 3 años multiplicando los 120 km que hace a la semana por la cantidad de semanas que hay en 3 años. Para determinar las semanas, tienes que considerar que en 1 año hay 52 semanas:

Semanas=52*3= 156 semanas

120*156=18,720 km

De acuerdo a esto, la respuesta es que Lucía no tiene que cambiar ya la bicicleta porque ha recorrido 18,720 km.

Answer:

2.44 ounces

Step-by-step explanation:

100% - 14% = 86%

2.1 ÷ 0.86 = 2.44  

3\(x^4\) + 1 is equivalent to \(x^{(4/2)}\) in terms of asymptotic growth rate. The value of 3\(x^4\) + 1 is O(\(x^{(4/2)}\)) and \(x^{(4/2)}\) is O(3\(x^4\) + 1).

To show that 3\(x^4\) + 1 is O(\(x^{(4/2)}\)), we need to find a constant C and a value of x such that:

|3\(x^4\) + 1| <= C|\(x^{(4/2)}\)|

For x >= 1, we can say that:

3\(x^4\) + 1 <= 4\(x^4\)

Taking the square root of both sides, we get:

sqrt(3\(x^4\) + 1) <= 2x²

Thus, we can choose C = 2 and x0 = 1, and we have:

|3\(x^4\) + 1| <= 2|\(x^{(4/2)}\)| for all x >= 1

Therefore, 3\(x^4\) + 1 is O(\(x^{(4/2)}\)).

To show that \(x^{(4/2)}\) is O(3\(x^4\) + 1), we need to find a constant C and a value of x such that:

|\(x^{(4/2)}\)| <= C|3\(x^4\) + 1|

For x >= 1, we can say that:

\(x^{(4/2)}\) <= x²

Thus, we can choose C = 1 and x0 = 1, and we have:

|\(x^{(4/2)}\)| <= |3\(x^4\) + 1| for all x >= 1

Therefore, \(x^{(4/2)}\) is O(3\(x^4\) + 1).

Since both 3\(x^4\) + 1 is O(\(x^{(4/2)}\)) and \(x^{(4/2)}\) is O(3\(x^4\) + 1).

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Answer:

Perimeter: 18    Area: 18

Step-by-step explanation:

6 + 6 + 3 + 3 = 18

6 x 3 = 18

Step-by-step explanation:

2x - 3y = 25

+ (5x + 3y = 10)

=> 7x = 35, x = 5.

Therefore 2(5) - 3y = 25, 3y = -15, y = -5.

The solution pair is (5,-5).

Answer:

x = 5

y = -5

so values in boxes = (5, -5)

Answer:

There is exactly one more real solution or there is exactly one more complex solution

Step-by-step explanation:

A quadratic equation is a polynomial of degree two

What this means is that a polynomial has two answers.

Now, from the question, we have an answer already which is a real root

Then the other answer which we do not have can take the form of two answers

It can either be a complex root or other wise be a real root

So the answer to this question is that ;

There is exactly one more real solution or there is exactly one more complex solution

Answer: 11 1/2 cm or 11.5 cm

Step-by-step explanation:

       To see how much taller the woman is than her son, we will subtract the son's height from the woman's height. We can convert these fractions into decimals to make it easier to subtract.

159 1/4 - 147 6/8 = 159.25 - 147.75 = 11.5 = 11 1/2 cm

The simplification of the expression is \(\frac{7}{5}\).

What is expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. Unknown variables, integers, and arithmetic operators are the components of an algebraic expression. There are no symbols for equality or inequality in it.

Here the given expression is

=> 1 + \(\frac{1}{1+\frac{1}{1+\frac{1}{2} } }\)

=> 1 + \(\frac{1}{1+\frac{1}{\frac{2+1}{2} } }\)

=> 1 + \(\frac{1}{1+\frac{1}{\frac{3}{2} } }\)

=> 1 + \(\frac{1}{1+\frac{3}{2} }\)

=> 1 + \(\frac{1}{\frac{2+3}{2} }\)

=> 1 + \(\frac{1}{\frac{5}{2} }\)

=> \(1+\frac{2}{5}\)

=> \(\frac{5+2}{5}\)

=> \(\frac{7}{5}\)

Hence the simplification of the expression is \(\frac{7}{5}\).

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Answer:

$1551 needed to cover the costs and 141 shirts will be sold.

Step-by-step explanation:

If a shirt costs $10 and the council is selling the shirt for $1 more ($11), after selling 141 shirts, they would have made a profit of $1*141=$141. Since there is also a setup fee of $141, the profit would actually be $0. This is when the costs are covered.

C = 10s + 141 (C is cost and s in no. of shirts sold)

s = 141

C = 141*10 + 141 = 1551

Hope this helps!

Answer:

-9+(-4.1)-(-8)

= -9-4.1+8

= -5.1

Answer:

~20.6155

Step-by-step explanation:

To compute distance between two points, we can get the vector from one to the other by subtracting them and then computing the length of the vector.

The length of a vector V is:

\(|V| = \sqrt{\sum_{i=1}^n v_i^2}\\\)

The vector is:

(9, -5. 4) - (-10, 3, 4) = (9 + 10, -5 - 3, 4 - 4) = (19, -8, 0)

So the length is:

\(\sqrt{19^2 + (-8)^2} = \sqrt{361 + 64} = \sqrt{425} = \sqrt{5\cdot 5\cdot 17} = 5\sqrt{17} \approx 20.6155281281\)

Answer:

t=8

Step-by-step explanation:

The Nyquist sampling rate for x(t) is 1800 Hz.

Nyquist sampling theorem states that in order to accurately reconstruct a signal without aliasing, the sampling rate must be at least twice the highest frequency component in the signal.

For the given signal x(t), we need to determine the highest frequency component.

The first term in x(t) is 2 times the sinc function of 800pit. The sinc function has zeros at integer multiples of pi, and its first zero after the origin occurs at pi. Therefore, the highest frequency component in the first term of x(t) is 400 Hz (corresponding to the frequency at which the sinc function crosses zero after the origin).

The second term in x(t) is the square of the sinc function of 1800*t. The sinc function has zeros at integer multiples of pi, and its first zero after the origin occurs at pi/1800. Therefore, the highest frequency component in the second term of x(t) is 900 Hz (corresponding to twice the frequency at which the sinc function crosses zero after the origin).

Thus, the highest frequency component in x(t) is 900 Hz. According to the Nyquist theorem, the sampling rate must be at least twice this frequency, or 1800 Hz, in order to accurately reconstruct the signal without aliasing. Therefore, the Nyquist sampling rate for x(t) is 1800 Hz.

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The relationship between the Type 1 Error Rate and statistical power is inverse and interconnected. A lower Type 1 Error Rate leads to higher statistical power, as it reduces the probability of false positive results and improves the ability to detect true effects.

The Type 1 Error Rate and statistical power have an important relationship in hypothesis testing. The Type 1 Error Rate, commonly denoted as α, represents the probability of rejecting the null hypothesis when it is true, leading to a false positive result. On the other hand, statistical power refers to the ability to detect a true effect or reject the null hypothesis when it is false, indicating a true positive result.

Lowering the Type 1 Error Rate makes the criteria for rejecting the null hypothesis more stringent, reducing the chances of falsely claiming a significant effect. By decreasing α, researchers set a higher threshold for accepting statistical significance, which decreases the probability of Type 1 errors. Consequently, this stricter criterion leads to higher confidence in the results.

Statistical power is influenced by the chosen Type 1 Error Rate. When the Type 1 Error Rate is reduced, it becomes more challenging to reject the null hypothesis. Therefore, for a fixed sample size and effect size, lowering the Type 1 Error Rate results in lower statistical power. This means that there is a higher likelihood of failing to detect a true effect.

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The latest time for pickup, found by converting the 150 minutes maximum time provided by the school, from minutes to hours is about 5:45 pm

Minutes can be converted into hours by dividing the number of minutes by 60, which is the number of minutes in an hour.

The time that school ends = 3:15 pm

The latest time for pick up after school care = 150 minutes after school ends

Therefore, the latest time for pick up after school care = 3:15 pm + 150 minutes

60 minutes = 1 hour

150 minutes = (1/60) × 150 = 2.5

The latest for pick up = 3:15 pm + 2.5 hours = 5:45 pm

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