A random sample of nı = 19 securities in Economy A produced mean returns of X 1 = 6.6% with sı = 2.3% while another random sample of n2 = 22 securities in Economy B produced mean returns of # 2 = 5% with s2 = 7.7%. Construct a 98% confidence interval estimate for pl H2 Assume that the samples are independent and randomly selected from normal populations with unequal population variances (012 + 022). T-Distribution Table % % < (H 1 - 2) < Round to two decimal places if necessary

Answers

Answer 1

The 98% confidence interval for the distribution of differences is given as follows:

(-2.58%, 5.78%).

How to obtain the confidence interval?

The difference of the sample means is given as follows:

6.6 - 5 = 1.6%.

The standard error for each sample is given as follows:

[tex]s_1 = \frac{2.3}{\sqrt{19}} = 0.53[/tex] [tex]s_2 = \frac{7.7}{\sqrt{22}} = 1.64[/tex]

The standard error for the distribution of differences is then given as follows:

[tex]s = \sqrt{0.53^2 + 1.64^2}[/tex]

s = 1.72.

The critical value, using a t-distribution calculator, for a two-tailed 98% confidence interval, with 19 + 22 - 2 = 39 df, is t = 2.4286.

The lower bound of the interval is given as follows:

1.6 - 2.4286 x 1.72 = -2.58%.

The upper bound of the interval is given as follows:

1.6 + 2.4286 x 1.72 = 5.78%.

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Related Questions

solve for x. help please

Answers

Answer:

x=6

Step-by-step explanation:

[tex]\frac{9}{3} =\frac{6}{2}[/tex]      

Find the distance between the points (7,–9) and (–2,–4).

Answers

The answer would be √106

What is the value of y when x=-1?
P

Answers

Answer:

is there an equation to find y? Because all you gave was x=-1

Help? I don’t understand this math

Answers

Answer:

Option J:

[tex] {x}^{3} {y}^{3} [/tex]

Step-by-step explanation:

Given,

Width of the rectangular prism

= x

Length of the rectangular prism

[tex] = {x}^{2} y[/tex]

Height of the rectangular prism

[tex] = {y}^{2} [/tex]

Therefore,

Volume of the rectangular prism

= Width × Length × Height

[tex] = x \times {x}^{2} y \times {y}^{2} [/tex]

[tex] = {x}^{3} {y}^{3} [/tex]

Hence,

The required volume of the rectangular prism is

Option J:

[tex] {x}^{3} {y}^{3} [/tex]

the answer should be A

Freddie is reading a book that has
440 pages. He has already read
140 pages. What decimal
describes the part of the book that
Freddie has already read?

PLEASE HELP ME

Answers

Answer:

140÷440(you can write it as a fraction)

=0.318181882

=0.32

Select all the expressions that have a value 10

Answers

can you provide more detail

There are about 23 Hershey kisses in an 11-ounce bag of candy. Write and solve a proportion
that you can use to find the number of Hershey kisses in a 5-ounce bag.

Answers

Answer:

about 10 hershy kisses

Step-by-step explanation:

Sorry If wrong :(

Use the Laplace transform to solve the following initial value problems. 2 a) ' +5/- y = 0, (O) = -1/(0) = 3 b) +4+ 30) = -1. V(0) - 2

Answers

To solve the initial value problems using the Laplace transform, we can apply the Laplace transform to the given differential equations and initial conditions.

For the first problem, the Laplace transform of the differential equation is s^2Y(s) + 5sY(s) + 2Y(s) = 0. Solving for Y(s), we find Y(s) = -3/(s+1).

Taking the inverse Laplace transform, we obtain the solution y(t) = -3e^(-t). For the second problem, the Laplace transform of the differential equation is sY(s) + 4Y(s) + 3/(s+1) = -2. Solving for Y(s), we find Y(s) = (-2s - 1)/(s^2 + 4s + 3). Taking the inverse Laplace transform, we obtain the solution y(t) = (-2t - 1)e^(-t).

a) The Laplace transform of the given differential equation is:

s^2Y(s) + 5sY(s) + 2Y(s) = 0

Using the initial condition Y(0) = -1 and Y'(0) = 3, we can apply the initial value theorem to obtain:

Y(s) = -1/s + 3

Taking the inverse Laplace transform of Y(s), we find:

y(t) = -3e^(-t)

b) The Laplace transform of the given differential equation is:

sY(s) + 4Y(s) + 3/(s+1) = -2

Using the initial condition Y(0) = -1, we can apply the initial value theorem to obtain:

Y(s) = (-2s - 1)/(s^2 + 4s + 3)

Taking the inverse Laplace transform of Y(s), we find:

y(t) = (-2t - 1)e^(-t)

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please please please help​

Answers

Answer:

I wanna say 16 but im not sure

Step-by-step explanation:



At a certain school, 8/9 of the students are boys. Today, 2/5 of the boys brought their lunch. What fraction of the students are
boys who brought their lunch today?

Answers

Answer:

the answer is I think 2/3

Fraction of boys brought lunch today is 16/25.

Here,

Given that:

The ratio of boys at certain school = 8/9

And 2/5 of boys brought lunch today

We have to find fraction of boys brought lunch today.

What is fraction?

Fractions denote the parts of a whole or collection of objects.

Now,

The ratio of boys at certain school = 8/9

And 2/5 of boys brought lunch today

Since, the ratio of boys 8/9 denotes 8 boys out of 9 students

Therefore, number of boys = 8

Thus, Fraction of boys brought lunch today = 8 x 2/5

                              = 16/25

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Carly loves to run while Riley prefers walking. Carly can run 3 miles per hour faster
than her sister Riley can walk the same distance. If Carly ran 15 miles in the same time
it took Riley to walk 9 miles, which equation can be used to find the speed of each
sister?

Answers

Answer:

Step-by-step explanation:

Student grades on a recent science test follow; 78, 81, 89, 75, 76, 91, 10963,
80, 87, 91, 95. Find the MEAN (average) to the nearest tenth.

• 76.9
• 83.0
• 83.8
• 83.3

Answers

Answer:

b

Step-by-step explanation:

took the test good luck

Answer:

Explained below

Step-by-step explanation:

I shall explain this

Add all the numbers together and divide by the number of numbers

[tex]78 + 81 + 89 + 75 + 76 + 91 + 10963 + 80 + 87 + 91 + 95 = answer \div 11 [/tex]

Some unsound arguments are valid. True or False?

Answers

The statement "Some unsound arguments are valid" is false.

The statement "Some unsound arguments are valid" is false.

A valid argument is a statement that follows the rules of logic.

An argument is known to be sound when it is valid and has true premises. When the premises of an argument are correct, the argument is considered sound. When an argument is valid, it follows logically from its premises, which are the statements that provide evidence or support for the argument's conclusion.

The unsound argument is the one that contains at least one false premise.

The sound argument is the one that contains only true premises and is valid (that is, follows logically from the premises).

If an argument is unsound, it can never be valid because it contains at least one false premise.

Therefore, the statement "Some unsound arguments are valid" is false.

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Can someone help me with this. Will Mark brainliest.

Answers

Answer:

pt B: (-1, -8)

Step-by-step explanation:

(x - 7)/2 = -4

x - 7 = -8

x = -1

(y-6)/2 = -7

y - 6 = -14

y = -8

what is m (angle) 2 if m (angle) 4 = 120°?​

Answers

Answer:

if 4 is 120° then 2 is also 180° since they are opposite angles.

Find the area of ​​the painted part of the image below. (Units in m)

Answers

Answer:

11 meters square.

Step-by-step explanation:

if the painted area is the gray it would be 10m

if its the white area its 9m

Which of the following is equivalent to the expression below?

Answers

Answer:

A. 7✓6 - 6x✓6

Explanation:

7✓6 - 5x✓6 - x✓6

= 7✓6 - (5x + x)✓6

= 7✓6 - 6x✓6

Bryan is a waiter. He waits on a table of 4 whose bill comes to $110.31. If Bryan receives a 15% tip, approximately how much will he receive?

Answers

If Bryan receives a 15% tip, then he will receive an amount of approximately $16.55 as a tip.

In order to calculate the tip-amount, we need to multiply the total-bill by the tip percentage. In this case, the "bill-amount" is $110.31, and the tip percentage is 15%.

To find the tip amount, we can use the formula:

Tip amount = (Total bill) × (Tip percentage),

Simplifying further,

We get,

Tip amount = $110.31 × 0.15,

= $16.5465 (rounded to the nearest cent)

Therefore, Bryan will receive approximately $16.55 as a tip.

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Who is Pythagorean? when was he born? when did he die?

Answers

Answer:

" Pythagoras established the first Pythagorean community in Crotone, Italy. Early Pythagorean communities spread throughout Magna Graecia. "

"was an ancient Ionian Greek philosopher and the eponymous founder of Pythagoreanism . " <---------- Credits to: Yahoo

He was born in about 570 BC on the Greek island of Samos

He died in 495 BC

Aubrey has a new art box in the shape of a rectangular prism. The box is 12\text{ cm}12 cm12, start text, space, c, m, end text by 20\text{ cm}20 cm20, start text, space, c, m, end text by 5\text{ cm}5 cm5, start text, space, c, m, end text. The only thing in the art box is a new pink eraser with the dimensions shown below.

Answers

Answer:

1196 cm3

Step-by-step explanation:

Answer:

1196

Step-by-step explanation:

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Answers

Answer:

Infinitely many solutions

Step-by-step explanation:

7x - 11 = 5(x - 2) + 2x - 1

7x - 11 = 10x - 10 + 2x - 1

7x - 11 = 7x - 11

No matter what number you plugin, it will always be equal.

1) 7x-11 = 5(x-2)+2x-1

2) 7x-11=5x-10+2x-1

3)7x-11=7x-11

4)0=0

5)Would cancel each other out.

6) So I guess no solutions?

Right triangle EFG it is known that the side opposite of acute angle F has a length of 18 inches and the leg adjacent to F has a length of 14 inches. Which of the following is closest to angle F
1. 38° 2. 65° 3. 52° 4. 72°

Answers

Answer:

3

Step-by-step explanation:

The closest angle to F in the triangle is 52 degrees.

What is Trigonometry?

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

Given that Right triangle EFG it is known that the side opposite of acute angle F has a length of 18 inches and the leg adjacent to F has a length of 14 inches.

We can use the tangent function to find the measure of angle F:

tan(F) = opposite/adjacent = 18/14

we can find the inverse tangent of this value:

F = tan⁻¹(18/14)

= tan⁻¹(1.28)

F= 52.15°

Hence, the closest angle to F in the triangle is 52 degrees.

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Nike reported total revenues of $44.5 billion for the year ending in May 31, 2021. What percentage of this amount relates to sales of footwear? (Enter your answer as a percentage without the % symbol, e.g., if your answer is 35%, enter 35) 2.How much cash did Nike collect from customers in the year ending May 31, 2021? The balance sheet shows that accounts receivable increased by $1,714 during the year, but some of that amount relates to mergers and acquisitions rather than additional credit sales. You will get the right amount of increased receivables from additional credit sales during the year by looking at the operating section of the statement of cash flows. (Enter your answer in $ millions)

Answers

Nike reported total revenues of $44.5 billion for the year ending in May 31, 2021. Footwear accounted for 66% of Nike's total revenues in 2021, the percentage of Nike's total revenues that relates to sales of footwear is 66%.

How to explain the information

The balance sheet shows that accounts receivable increased by $1,714 during the year, but some of that amount relates to mergers and acquisitions rather than additional credit sales. You will get the right amount of increased receivables from additional credit sales during the year by looking at the operating section of the statement of cash flows.

The operating section of the statement of cash flows shows that Nike collected $42.8 billion from customers in the year ending May 31, 2021. This is the amount of cash that Nike received from customers for the sales of its products and services.

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help pls first awnser get brainest

Answers

Answer:

124

Step-by-step explanation:

the top square is 16 by 6 which will give you an area of 124 the bottom square has dimensions of 2 by 14 which is 28 add those numbers together to get your answer.

5/7+1/2+3/4

i need help please

Answers

Answer:

1.96428571429

Step-by-step explanation:

Answer:

55/28

Step-by-step explanation:

5×2+7/14+3/4

17/14+3/4

68+42/56

110/56

55/28

A guacamole recipe calls for 28 ounces of peeled and seeded avocadoes. The total cost of the tomatoes is $_____ if the as-purchased unit cost of Avocado's is $1.21 per pound and the yield percentage is 72%.

Answers

The total cost of seeded avocadoes is $1.52 (approx).

Given data:

As-purchased unit cost of avocado = $1.21 per pound

Yield percentage = 72%

Convert the given quantity of avocadoes into pounds.

1 ounce = 1/16 pounds28 ounces = (28/16) pounds= 1.75 pounds

Find out the cost of 1 pound of avocado

As per the given data, the as-purchased unit cost of Avocado's is $1.21 per pound.

Find out the cost of 1.75 pounds of avocado= (1.75 x 1.21) dollars= $2.1175.

Calculate the yield amount.

After calculating the yield percentage, we can find the amount of avocado we can use after we remove the peel and seed.

Yield amount = (yield percentage × amount as purchased)/100Yield amount

= (72 × 1.75) / 100= 1.26 pounds.

Find out the cost of yield amount

Cost of yield amount = (cost of 1.75 pounds of avocado × yield amount)/1.75

Cost of yield amount = ($2.1175 × 1.26) / 1.75

Cost of yield amount = $1.5246

Hence, the total cost of 28 ounces of peeled and seeded avocadoes is $1.52 (approx).

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build a binary search tree for the words banana, peach, apple, pear, coconut, mango, and papaya using alphabetical order.

Answers

To build a binary search tree using alphabetical order for the given words, we start with an empty tree and insert each word in the appropriate position based on its alphabetical order.

Here's the step-by-step process:

Start with an empty tree.

Insert the first word, "banana," as the root of the tree.

Insert the second word, "peach," comparing it to the root. Since it comes after "banana," it becomes the right child of the root.

Insert the third word, "apple." Comparing it to the root, it comes before "banana," so we traverse to the left child of the root. Since the left child is empty, "apple" becomes the left child of "banana."

Insert the fourth word, "pear." Comparing it to the root, it comes after "banana," so we traverse to the right child. Comparing it to "peach," it comes before "peach," so we traverse to the left child of "peach." Since the left child is empty, "pear" becomes the left child of "peach."

Insert the fifth word, "coconut." Comparing it to the root, it comes before "banana," so we traverse to the left child. Comparing it to "apple," it comes after "apple," so we traverse to the right child. Comparing it to "pear," it comes before "pear," so we traverse to the left child of "pear." Since the left child is empty, "coconut" becomes the left child of "pear."

Insert the sixth word, "mango." Comparing it to the root, it comes after "banana," so we traverse to the right child. Comparing it to "peach," it comes before "peach," so we traverse to the left child. Comparing it to "pear," it comes after "pear," so we traverse to the right child. Comparing it to "coconut," it comes after "coconut," so we traverse to the right child. Since the right child is empty, "mango" becomes the right child of "coconut."

Insert the seventh word, "papaya." Comparing it to the root, it comes after "banana," so we traverse to the right child. Comparing it to "peach," it comes after "peach," so we traverse to the right child. Comparing it to "pear," it comes after "pear," so we traverse to the right child. Comparing it to "coconut," it comes after "coconut," so we traverse to the right child. Comparing it to "mango," it comes after "mango," so we traverse to the right child. Since the right child is empty, "papaya" becomes the right child of "mango."

The resulting binary search tree will look like this:

        banana

       /      \

   apple    peach

       \        \

      pear  papaya

      /

 coconut

      \

      mango

Note: The tree might have different structures depending on the order of insertion, as long as it maintains the binary search tree property.

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Which expression is equivalent

Answers

Answer:

the first one

Step-by-step explanation:

I think it’s the first one

El elemento neutro de la suma es el 1.

Answers

The Neutral element of the Sum is 1.

se desea constrir una barda utilizando block . las dimensiones de la barda son 25 m de largo y 2 m de altura . si se requieren 12 blocks para cada metro cuadrado de barda ¿ cuantos blocks se usaran en su construcción?​



respuesta urgente !!!

Answers

Answer:

I don't understand the language

Step-by-step explanation:

am not form Paris

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The lengths of time (in years) it took a random sample of 32 former smokers to quit smoking permanently are listed. 11.8 14.4 10.8 10.4 16.2 20.5 12.6 10.4 19.5 14.2 12.8 17.6 15.9 21.2 18.4 22.9 7.9 11.4 9.5 17.2 14.5 21.7 16.8 12.9 8.9 16.3 21.3 13.6 17.4 13.7 7.8 19.8Assume the population standard deviation is 6.6 years. At =0.09, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 14 years? Complete parts (a) through (e). (a) Identify the claim and state the null hypothesis and alternative hypothesis. (b) Identify the standardized test statistic. Use technology. (c) Find the P-value. Use technology. (d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim at the 10 % level of significance. Can you please tell me the connection to human rights for this passage. Thank you for ur help Read the excerpt from "Nothing but Net. She should be feeling nervous about being accepted. And yet, she wasnt. She was feeling something else completely. She felt her anger grow as she rose from the shadows on the court. Dimitri wants to visualize the setting. Which phrase from the excerpt is the best for him to connect with? should be feeling nervous something else completely felt her anger grow as shadows on the court Write the expression in radical form.x 5/4 Which expression is equivalent to ( x4/3 x2/3 )1/3? The legalization of drugs is neither unwise nor immoral. It is not unwise because by legalizing drugs we would eliminate the illegal drug trade. Hence, by legalizing drugs, we would rid our nation of all the violence that goes along with the illegal drug trade. Furthermore, the legalization of drugs is not immoral because it can be combined with a massive program of moral education. The conclusion in a standard argument form is often presented as __________ Buildings are illuminated at night to enhance their features and shapes. Night time is great to photograph buildings. If you have to shoot a building at night, the mostchallenging thing is to get the correct exposure and color balance. Write a paragraph how you will achieve appropriate exposure and color balance. i am a factor of 40 when you pair me with 15, my lcm of 15, i am not one En la primavera yo siempre ___________(1) con mi madre los sbados por la maana a buscar flores. Yo ____________(2) flores por toda la casa. Casi todas las maanas yo ___________(3) un paseo por el parque con mi hermana. Mi padre siempre me ___________(4) dinero para comprar comida. Algunas veces, nosotros ___________(5) televisin o come (6) tacos. Antes de comer, mis hermanos ___________(7) la mesa y ellos, mis padres y yo vemos (8) televisin. Write an essay using Christianworld view about coaching employees. Provide a definition for enabling statue.In your own words explain "enabling statute. (Answer must be minimum one paragraph.)Provide an example of an enabling statute not found in your text book.Name the administrative agency created by the enabling statute named in (c) above.Provide a definition for Federal Register.Provide a Definition for Code of Federal Regulations.In your own words, explain how these two publications are used in Administrative Law. (Answer must be minimum one paragraph.)In your own words describe which of these publications you prefer and why. (Answer must be minimum one paragraph.) Explain why the hospital should calculate the ALOS first by including the total LOS and then byleaving out the deviating figure. RectangleEFGHwas translated 4 units to the left and 6 units up. Which ruledescribes the translation that was applied to rectangle EFGH to create rectangleE'F'G'H?(x,y) (X-4.7+6)(x,y) (X-6.7+4)(x,y) (X+4.7-6)(x,y) (-44,64) If Saturn were to magically explode one day, how long would it take us on Earth to see it? Square root of 202!!!!!!!!!!!!!! I need help why does the quadratic formula work all the time In the figure shown, line AB is parallel to line CD. Part A: What is the measure of angle x? Show your work. (5 points) Part B: Explain how you found the measure of angle x by identifying the angle relationships that you used along the transversal. (5 points) AB and CD are parallel lines, and PQ and PR are transversals which intersect AB at P and CD at Q and R. Angle APQ is labeled as 65 degrees, angle QPR is equal to x, angle PRD is equal to 120 degrees. which of the following is not found in an area of alpine glaciation?A. V-shaped valleysB. aretesC. cirquesD. U-shaped valleys 1245Beth filled 56 jars with paint.If each jar holds 1 pint of paint, how many gallons of paint did Beth use?Beth usedgallons of paint Division of labor is where a) firms create different categories of occupations. b) the production process is divided into smaller tasks to increase productivity. c) management devises an organizationa