Two researchers, Jaime and Mariya, are each constructing confidence intervals for the proportion of a population who is left-handed. They find the point estimate is . Each independently constructed a confidence interval based on the point estimate, but Jaime's interval has a lower bound of and an upper bound of , while Mariya's interval has a lower bound of and an upper bound of . Which interval is wrong? Why? Choose the correct answer below.

Answers

Answer 1

Complete question :

Two researchers, Jaime and Mariya, are each constructing confidence intervals for the proportion of a population who is left-handed. They find the point estimate is 0.13. Each independently constructed a confidence interval based on the point estimate, but Jaime’s interval has a lower bound of 0.097 and an upper bound of 0.163, while Mariya’s interval has a lower bound of 0.117 and an upper bound of 0.173. Which interval is wrong? Why?

Answer:

Mariya's interval

Step-by-step explanation:

Point estimate = 0.13

Mariya's confidence interval :

Lower boundary = 0.117

Upper boundary = 0.173

Jamie's confidence interval :

Lower boundary = 0.097

Upper boundary = 0.163

The correct confidence interval should have an average value equal to the value of the point estimate ;

Jamie's confidence interval average :

(0.097 + 0.163) / 2 = 0.26 / 2 = 0.13

Mariya's confidence interval average :

(0.117 + 0.173) / 2 = 0.29 / 2 = 0.145

Based on the confidence interval average obtained we can conclude that Mariya's interval is wrong as it the average obtained is greater than the point estimate.

0.145 > 0.13

Related Questions

a bottle of soft drinks costs $2. the commission paid on one bottle is 2% of the cost price.find the commission on 24 bottles of soft drinks

Answers

Answer:

$0.96

Step-by-step explanation:

First, find the cost of the 24 bottles, by multiplying 24 by 2

24(2)

= 48

Find the commission by finding 2% of 48

48(0.02)

= 0.96

So, the commission will be $0.96

The commission on 24 bottles of soft drinks is $0.96.

How to find the commission on 24 bottles of soft drinks?

Given:

a bottle of soft drinks costs $2. the commission paid on one bottle stands at 2% of the cost price.

First, we want to estimate the cost of the 24 bottles, by multiplying 24

by 2

[tex]= 24*(2)[/tex]

= 48

To find the commission by estimating 2% of 48

commission = 48*(0.02)

commission = 0.96

So, the commission will be $0.96.

Therefore, the commission on 24 bottles of soft drinks is $0.96.

To learn more about algebra

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Charlie made hamburgers
for his family and they
each had a diameter of 7
cm. If he made 12
hamburgers. What is the
total area for all 12?

Answers

Answer:

461.58

Step-by-step explanation:

Directions: Find the area of a circle with given radius. Round off your answer to the nearest hundredths.

1. r= 3.2 m

2. r = 17 mm

3. r = 36.5 mm

4. r = 83 cm

5. r = 5.8 m

A. Find the volume of the following:

Formula: V = e x e x e

6. e = 45.25 cm

7. e = 29 cm

Formula: V = L x W x H

8. l = 23 cm
w= 14 cm
h = 11 cm

9. l = 41 cm
w= 28 cm
h = 17 cm

10. l = 20 cm
w= 18 cm
h = 14 cm

Answers

Answer:

Part A:

1. 32.17

2. 907.92

3. 4185.39

4. 21642.43

5. 105.68

Part B:

6. 92652.203125 or 92652.20

(not sure if you wanted rounded or exact number)

7. 24389

Part C:

8. 3542

9. 22848

10. 5040

Step-by-step explanation:

Part A:

To find the area of the circle, use the following formula:π × r²"r" is the radius of the circle, or the distance between the center and the edge of the circle.Example:Radius - 10π × r²π × 10²π × 100≈314.16

Part B:

To find the volume of a cube, multiply e × e × eExample:e = 5 cme × e × e5 × 5 × 5 = 125 cm³

Part C:

To find the volume of a figure, multiply length × width × heightExample:L = 5cm, W = 2cm, H = 6cm5 × 2 × 6 = 60 cm³

URGENT HELP NEEDED ASAP
PHOTO ATTACHED
CALCULUS

Answers

Answer:

Option A

Step-by-step explanation:

From the piecewise function given in the picture,

f(x) = k³ + x If x < 3

= [tex]\frac{16}{k^2-x}[/tex] If x ≥ 3

Here, function is discontinuous at x = 3

If the function is continuous at x = 3 then,

k³ + 3 = [tex]\frac{16}{k^2-3}[/tex]

(k³ + 3)(k² - 3) = 16

k⁵ - 3k³ + 3k² - 9 = 16

k⁵ - 3k³ +3k² - 25 = 0

By using a graphing tool we can get the point where k = 2.081.

Option A is the answer.

What is the equation of the exponential function??
Anthony's mom bought a new Prius in 2018 that cost
$28,000. She looked up the current value and saw that
it was only $22,000 after two years! She is worried
about how much her car will be worth in 3 more years.
What is the exponential equation?
1
How much will the car be worth in 3 years?
Submit

Answers

Answer:

$19500

Step-by-step explanation:

Let the depreciation rate is x per year, then we have:

28000*x² = 22000x² = 22000/28000x² = 0.7857x = √0.7857 x = 0.8864

Exponential function for this case is:

Answers

Answer: equal 5 tablespoons plus 1 teaspoon butter.

Step-by-step explanation:

Answer:

1/3 cup would equal 5 tablespoons plus 1 teaspoon butter

Step-by-step explanation:

i Hope this was the answer you was looking for. If not just go to one of my questions and take the points that you need to gain back!!!

express -17/8 in decimal form

Answers

Answer:

-2.125

Step-by-step explanation:

3 1/4 pints =____ fl oz?

Answers

Answer:

Step-by-step explanation:

Answer:52

v1t1=v2t2

Answer:

Step-by-step explanation:

rate = distance / time distance is constant (a-b) so call it D

time = distance / rate rate = speed (ie miles per hour = mph)

time = distance / speed

A) if the new speed is 1.5 of the original speed

original time = 3.25 hours or 195 minutes

3.25 = D / 1 new time = D/1.5 find new time

3.25 is to D as new time is to D/1.5

3.25/D = new time / D/1.5 multiple D/1.5 on both sides

(3.25/D) ( D/1.5) = new time the distance D cancels

3.25 (D / D) / 1.5 = new time

3.25 / 1.5 = 2.167 hours or 2 hours and 10 minutes

B) if the speed is 3/4 the original speed

original time = 3.25 hours or 195 minutes

3.25 = D / 1 new time = D/(3/4) find new time

3.25 is to D as new time is to D/0.75

3.25/D = new time / D/0.75 multiple D/0.75 on both sides

(3.25/D) ( D/0.75) = new time

3.25 (D / D) / 0.75 = new time

3.25 / 0.75 = 4.333 hours or 4 hours and 20 minutes

The circumcenter is the center of the __________ circle.
Question 2 options:

A)

obtuse

B)

circumscribed

C)

inscribed

D)

congruent

Answers

The answer is B: circumscribed

What is the slope of the line tangent to the curve square root (x) +square root (y) = 2 at the point ( 9/4, 1/4 )? (photo attached of answer choices)

Answers

Answer:

B. [tex]\displaystyle -\frac{1}{3}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Algebra I

Terms/CoefficientsExponential Rule [Rewrite]: [tex]\displaystyle b^{-m} = \frac{1}{b^m}[/tex]Exponential Rule [Root Rewrite]: [tex]\displaystyle \sqrt[n]{x} = x^{\frac{1}{n}}[/tex]

Calculus

Derivatives

Derivative Notation

Derivative of a constant is 0

The definition of a derivative is the slope of the tangent line

Basic Power Rule:

f(x) = cxⁿf’(x) = c·nxⁿ⁻¹

Implicit Differentiation

Step-by-step explanation:

Step 1: Define

[tex]\displaystyle \sqrt{x} + \sqrt{y} = 2[/tex]

[tex]\displaystyle (\frac{9}{4}, \frac{1}{4})[/tex]

Step 2: Differentiate

Implicit Differentiation

[Function] Rewrite [Exponential Rule - Root Rewrite]: [tex]\displaystyle x^{\frac{1}{2}} + y^{\frac{1}{2}} = 2[/tex][Function] Basic Power Rule: [tex]\displaystyle \frac{1}{2}x^{\frac{1}{2} - 1} + \frac{1}{2}y^{\frac{1}{2} - 1}\frac{dy}{dx} = 0[/tex][Derivative] Simplify: [tex]\displaystyle \frac{1}{2}x^{\frac{-1}{2}} + \frac{1}{2}y^{\frac{-1}{2}}\frac{dy}{dx} = 0[/tex][Derivative] Rewrite [Exponential Rule - Rewrite]: [tex]\displaystyle \frac{1}{2x^{\frac{1}{2}}} + \frac{1}{2y^{\frac{1}{2}}}\frac{dy}{dx} = 0[/tex][Derivative] Isolate [tex]\displaystyle \frac{dy}{dx}[/tex] term [Subtraction Property of Equality]: [tex]\displaystyle \frac{1}{2y^{\frac{1}{2}}}\frac{dy}{dx} = -\frac{1}{2x^{\frac{1}{2}}}[/tex][Derivative] Isolate [tex]\displaystyle \frac{dy}{dx}[/tex] [Multiplication Property of Equality]: [tex]\displaystyle \frac{dy}{dx} = -\frac{2y^{\frac{1}{2}}}{2x^{\frac{1}{2}}}[/tex][Derivative] Simplify: [tex]\displaystyle \frac{dy}{dx} = -\frac{y^{\frac{1}{2}}}{x^{\frac{1}{2}}}[/tex]

Step 3: Evaluate

Find slope of tangent line

Substitute in point [Derivative]: [tex]\displaystyle \frac{dy}{dx} \bigg| \limit_{(\frac{9}{4}, \frac{1}{4})} = -\frac{(\frac{1}{4})^{\frac{1}{2}}}{(\frac{9}{4})^{\frac{1}{2}}}[/tex][Slope] Exponents: [tex]\displaystyle \frac{dy}{dx} \bigg| \limit_{(\frac{9}{4}, \frac{1}{4})} = -\frac{\frac{1}{2}}{\frac{3}{2}}[/tex][Slope] Simplify: [tex]\displaystyle \frac{dy}{dx} \bigg| \limit_{(\frac{9}{4}, \frac{1}{4})} = -\frac{1}{3}[/tex]

Topic: AP Calculus AB/BC (Calculus I/II)

Unit: Differentiation - Implicit Differentiation

Book: College Calculus 10e

Find the surface area of the Triangular prism.

A = bh

A = 1/2(bh)

Answers

Answer:

Surface area of triangular prism =1/2(bh)

=1/2(3*4)

what is photosynthesis

Answers

Answer:

writing m thoda problem h lakin samagh lena

Answer:

Photosynthesis is the process by which plants make there own food.

Step-by-step explanation:

Hope this will help you!

pls help me i’ll give u brainlest if correct

Answers

Answer:

Step-by-step explanation:

there is only one card with a 6; if you select the 6 card and do not replace it there is zero possibility of selecting another 6 card

A number between 0 and 1, expressed as one number over another, is called a

Answers

Answer:

its called a frcaction

Step-by-step explanation:

Fraction po

#carryonlearning

Matthew rakes leaves to earn money. The points in this graph represent the total amount of money Matthew earns based on the number of hours he rakes leaves. Matthew wants to purchase sneakers that costs $48. How many hours does Matthew need to rake leaves to earn enough money to buy the sneakers?\

Answers

Answer:

it will take him 6 hours to earn enough money to buy the sneakers

Step-by-step explanation:

I took the test

Answer:

The answer should be 6

Step-by-step explanation:

I took the test too

PLEASE ANSWER ASAP !!! 90 POINTS AND BRAINLIEST!!!!!!!
( -5) + (+8) =
(+5) + (+4) =
( -3) + (+1) =
( -8) + ( -7) =
( -6) + (+3) =

Answers

Answer:

-5+8=-3

5+4=9

-3+1=-2

-8+-7=-15

-6+3=-3

Answer:

( -5) + (+8) = 3

(+5) + (+4) = 9

( -3) + (+1) = - 2

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