An experiment was conducted to see if there is any difference in the amount of weight gained by two groups of pigs fed + Feed # Pigs Mean Weight Gain Standard Deviation Diet A 36 55 3 Diet B 49 53 5.6 1. Construct a 95% confidence interval for the difference of means weight gain using 76 as the degree of freedom. 2. Assume that the variance of the 2 populations are equal, test the hypothesis that pigs fed with Diet A gain more weight than with Diet B at the 0.05 level. 2.

Answers

Answer 1

Answer:

Answer:

1. The confidence interval for the difference of means weight gain using 76 as the degree of freedom  is -1.664, 5.664

2.The calculated value of t does not lie in the critical region for both d.f 76 and 83 . Therefore we accept our null hypothesis that pigs fed with Diet A gain more weight than with diet B at the 0.05 level

Step-by-step explanation:

         # Pigs              Mean Weight Gain           Standard Deviation

Diet A     36                       55                                   3

Diet B     49                        53                                5.6

(x`1- x` The 2) ± t∝/2 (v) . Sp √1/n1 + 1/n2

where v= d.f= 76

Here the difference between the sample means is x`1- x`2=  55-53= 2

The pooled estimate for the common variance σ² is

Sp² = 1/n1+n2 -2 [ ∑ (x1i - x1`)² + ∑ (x2j - x`2)²]

=  1/36 +49-2 [ 55²+53²]

Sp = √3025 +2809/83 = 8.38

t (0.025) (76) = 1.992

(x`1- x`2)± t∝/2 (v) . Sp √1/n1 + 1/n2

(2 )± 1.992 (8.38) √ 1/36 + 1/49

(2 )± 3.664

-1.664, 5.664

Par t 2:

The null and alternate hypotheses are

H0 : u1 >  u2          against   Ha: u1 ≤ u 2

Significance level alpha = 0.05

The critical region t ≥ t (0.05, 76) = 1.665

D.f = n1+n2- 2= 83

The critical region t ≥ t (0.05, 83) = 1.663

t = (x`1- x` ) /. Sp √1/n1 + 1/n2

t= 2/ 8.38 √1/36+ 1/49

t= 2/1.839

t= 1.087

The calculated value of t does not lie in the critical region for both d.f 76 and 83 . Therefore we accept our null hypothesis that pigs fed with Diet A gain more weight than with diet B at the 0.05 level


Related Questions

I need help!! Given: Quadrilateral pqrt , qsv , ptv , qv bisects rt , and Qr//pv

prove: QS=VS

What is the Statement and Reasons

Answers

Answer:

Statement 1: Quadrilateral PQRT; line QSV; line PTV line QV bisects line RT, and line OR is parallel to line PV

Statement 3: angle QSR is congruent to angle VST

Statement 5: Triangle RSQ is congruent to angle TSV

Reason 1: Given

Reason 2: If a line bisects a segment, then it divides the segment into two congruent segments.

Reason 4: If two lines are parallel, then the alternate interior angles are congruent.

Step-by-step explanation:

The first statement will always be your given statements.

The given result is proved by ASA congruence criteria.

What are the criteria for congruent triangles?

Two triangles are said to be congruent when all of their corresponding sides and angles are equal. For this relation between two triangles, there are many criteria such as SSS, SAS, ASA and RHS.

The given problem can be solved in statement and reason form as follows,

In triangles ΔQSR and ΔTSV,

Statement                                                           Reason

1. ∠QRS = ∠STV                                        Alternate interior angles for QR║PV

2. RS = TS                                                 QV bisects Line segment RT

3. ∠QRS = ∠VTS                                      Vertically opposite angles

4. ΔQSR ≅ ΔTSV                                     Triangles are congruent by ASA

Thus, QS =VS due to corresponding parts of congruent triangles.

Hence, QS = VS is proved by the ASA criteria for congruent triangles.

To know more about congruent triangles click on,

https://brainly.com/question/22062407

#SPJ2

inverse laplace of L^-1 {5s/s^2 + 3s - 4}​

Answers

Answer:

[tex]e^{t}+4e^{-4t}[/tex].

Step-by-step explanation:

To find the Laplace inverse of the above problem, we have to first solve the problem as a partial fraction, hence:

[tex]\frac{5s}{s^2+3s-4}=\frac{5s}{s^2+4s-s-4} \\\\=\frac{5s}{s(s+4)-1(s+4)}\\\\=\frac{5s}{(s-1)(s+4)}=\frac{A}{s-1}+\frac{B}{s+4}\\\\= \frac{A(s+4)+B(s-1)}{(s-1)(s+4)}\\\\Hence:\\\\\frac{A(s+4)+B(s-1)}{(s-1)(s+4)}=\frac{5s}{(s-1)(s+4)}\\\\A(s+4)+B(s-1)=5s\\\\to\ find \ A,put\ s=1:\\\\A(1+4)+B(1-1)=5(1)\\\\5A=5\\\\A=1\\\\to\ find \ B,put\ s=-4:\\\\A(-4+4)+B(-4-1)=5(-4)\\\\-5B=-20\\\\B=4\\\\Hence:\\\\\frac{5s}{s^2+3s-4}=\frac{1}{s-1}+ \frac{4}{s+4}\\\\[/tex]

[tex]L^{-1} [\frac{5s}{s^2+3s-4}]=L^{-1}[\frac{1}{s-1} ]+L^{-1}[\frac{4}{s+4} ]\\\\But\ L^{-1}[\frac{1}{s-a} ]=e^{at}\\\\Hence:\\\\L^{-1} [\frac{5s}{s^2+3s-4}]=L^{-1}[\frac{1}{s-1} ]+L^{-1}[\frac{4}{s+4} ]=e^{t}+4e^{-4t}\\\\=e^{t}+4e^{-4t}[/tex]

Stephanie spends $15 each month to belong to a photography club. As a member of the club she can develop rolls of film for $2.50 each. Write and solve an equation to find the total amount Stephanie will spend this month if she develops 5 rolls of film.

Answers

Answer:

2.5*5= 12.5

15-12.5=2.5

So in order to pay the 15 dollars in the photography club, she only has to pay 2.50

negative 4 divided by 3 as a fraction.

Answers

Answer:

-4/3

Step-by-step explanation:

Because 3 is a prime number, the answer can't be reduced furthermore making your answer -4/3.

Answer:

The answer is -1.333

Step-by-step explanation:

As a fraction it is 1 333

-----

1000

Question on the attachment.. Please help

Answers

Answer:

yehh it would be efffective

Kevin is planting 15 bushes and 9 trees in rows if he wants all the rows the same with no plants left over what is the greatest number of rows kevin can plant

Answers

Answer:

he could do 6 row of 4, 8 rows of 3, 12 rows of 2

Step-by-step explanation:
15+9=24
6*4=24
8*3=24
12*2=24

Measurement A equals 6X - 35°

Answers

Answer:

............the answer is 97

There are 60 seats on a train. 6 of the seats are empty. What percentage of the seats on the train are empty?

Answers

Answer:

10%

Step-by-step explanation:

Set up a proportion: [tex]\frac{6}{60} = \frac{x}{100}[/tex]  Cross multiply, then divide: 6 × 100 = 600, 600 ÷ 60 = 1010/100 = 10%

I hope this helps!

Write and solve an equation to find the number of miles you must drive to have the same cost for each of the car rentals. Let m represent the number of miles. $20+.50 per mile and $30+.25 permile

Answers

Answer:

equation: 20+0.50x=30+0.25x

answer: 40 miles

Step-by-step explanation:

i'm a math genius

Answer please! Find the answer to both questions

Answers

Answer:

APtₙ = (n-2)k² + (2n - 3)k + n

Step-by-step explanation:

Given sequence:

-k² - k + 1, k + 2, k² + 3k + 3, 2k² + 5k + 4, ...

We can see apart from the second term all terms are 2nd degree trinomial so it is not a GP.

Let's find the difference: to determine if it is a AP:

k + 2 - (-k² - k + 1) = k + 2 + k² + k -1 = k² + 2k + 1k² + 3k + 3 - (k + 2) =  k² + 3k + 3 - k - 2 = k² + 2k + 12k² + 5k + 4 - (k² + 3k + 3) = 2k² + 5k + 4 - k² - 3k - 3 = k² + 2k + 1

As we see the difference is common and it confirms the sequence is AP.

First term is

a₁= -k² - k + 1

Common difference is

d = k² + 2k + 1

nth term is:

tₙ = a₁ + (n-1)dtₙ = -k² - k + 1 + (n-1)(k² + 2k + 1) =-k² - k + 1 + (n-1)k² + (n-1)*2k + n-1 =(n-2)k² + (2n - 3)k + n

550 is 5% of what number?

Which statements are correct? Check all that apply.

Answers

Answer:

11000

Step-by-step explanation:

if we substitute the equation with 11000 550 is 5% of 11000

Drag and drop each number to its correct position on the number line.

i forgot the number line, so sorry

Answers

Answer:

-⅜ is between -1 and 0

⅞ is between 0 and 1

-2½ is between -3 and -2 ( in the mid )

2½ is between 2 and 3 ( in the mid )

The time period, T, of a simple pendulum is directly proportional to the square root of the length, d, of the pendulum.

When d=6, T=5

Find the value of T when d=3

Input note: give your answer correct to 2 decimal place.

Answers

Answer: T= 3.54

Step-by-step explanation:

Step 1

Given that

The time period, T, s doirectly proportional  to the square root of the length, d, of the pendulum, we have that

T  ∝  [tex]\sqrt{d}[/tex]

Introducing the constant of proportionality, we have that

T= K[tex]\sqrt{d}[/tex].

Step 2

When d=6, T=5, K =?

T= K[tex]\sqrt{d}[/tex].

5 = k[tex]\sqrt{6}[/tex]

5=  k x 2.44949

k =5/2.44949

k =2.041

Therefore, when d = 3 , T= ?

T= K[tex]\sqrt{d}[/tex]

T= 2.041 x [tex]\sqrt{3}[/tex]

T= 3.53511≈ 3.54

(2^2)^4+3^3*3^3-43+85^2/85^2+23+445+54=?

Answers

Answer:

(2^2)^4+3^3*3^3-43+85^2/85^2+23+445+54= the answer is 1465

Help please!!!! I’ll give brainilest

Answers

THE ANSWER IS B bebsjas
Hiii....I’m new in Brainly....can u plz thnx my other 3-4 ansssss plzzzzzzzz

So the correct ans is ‘D’

Drag and drop the answers into the boxes to correctly convert between decimals, fractions, and percents.

Answers

Answer:

?

Step-by-step explanation:

There is no photo...

what is 9,344 divided by 29

Answers

Answer:

322.2069

Step-by-step explanation:

s0 pretty much 322

Determine the dimensions of a rectangular solid (with a square base) with maximum volume if its surface area is 181.5 square centimeters

Answers

Answer:

The base and height of the solid is 5.5cm

Step-by-step explanation:

Given

[tex]Surface\ Area = 181.5cm^2[/tex]

Required

Determine the dimensions that maximizes the volume

Let the base dimension be x and the height be h

The volume is calculated as:

[tex]Volume =x^2 * h[/tex]

[tex]Volume =x^2h[/tex]

181.5 =x^2h

The surface area (S) is calculated as this:

[tex]S = 2(x^2 + xh + xh)[/tex]

[tex]S = 2(x^2 + 2xh)[/tex]

[tex]S = 2x^2 + 4xh[/tex]

Substitute 181.5 for S

[tex]181.5 = 2x^2 + 4xh[/tex]

Make h the subject:

[tex]4xh = 181.5 - 2x^2[/tex]

[tex]h = \frac{181.5 - 2x^2}{4x}[/tex]

Substitute [tex]h = \frac{181.5 - 2x^2}{4x}[/tex] in [tex]Volume =x^2h[/tex]

[tex]V = x^2(\frac{181.5 - 2x^2}{4x})[/tex]

[tex]V = x(\frac{181.5 - 2x^2}{4})[/tex]

[tex]V = \frac{1}{4}(x)(181.5 - 2x^2)[/tex]

[tex]V = \frac{181.5x}{4} - \frac{2x^3}{4}[/tex]

[tex]V = \frac{181.5x}{4} - \frac{x^3}{2}[/tex]

To get the maximum, we differentiate V with respect to t and set the differentiation to 0

[tex]dV = \frac{181.5}{4} - \frac{3x^2}{2}[/tex]

Set to 0

[tex]0 = \frac{181.5}{4} - \frac{3x^2}{2}[/tex]

[tex]\frac{3x^2}{2} = \frac{181.5}{4}[/tex]

Multiply through by 4

[tex]4 * \frac{3x^2}{2} = \frac{181.5}{4} * 4[/tex]

[tex]2*3x^2 = 181.5[/tex]

[tex]6x^2 = 181.5[/tex]

[tex]x^2 = \frac{181.5}{6}[/tex]

[tex]x^2 = 30.25[/tex]

[tex]x = \sqrt{30.25[/tex]

[tex]x = 5.5[/tex]

Recall that:

[tex]h = \frac{181.5 - 2x^2}{4x}[/tex]

[tex]h = \frac{181.5 - 2 * 5.5^2}{4 * 5.5}[/tex]

[tex]h = \frac{181.5 - 60.5}{22}[/tex]

[tex]h = \frac{121}{22}[/tex]

[tex]h = 5.5[/tex]

So, we have:

[tex]h = 5.5[/tex]

[tex]x = 5.5[/tex]

Hence, the base and height of the solid is 5.5cm

Given a Segment AB find the distance; B = 30 and A = 10

Answers

Answer:

use formula of distance ;

Step-by-step explanation:

d = distance

(x_1, y_1) = coordinates of the first point

(x_2, y_2) = coordinates of the second point

so d is √((x_2-x_1)²+(y_2-y_1)²)

to find the distance between any two points.

taking A as x coordinate and B as y coordinate ie

A= [10,0]; B= [0,30]

[10 is x1 ,0 is y1 ]; [0is x2 and 30 is y2]

putting values in distance formula

√(0-10)²+(30-0)²

= √( -10 )²+(30)²

=[tex]\sqrt[/tex] 100+900

=√1000

= 31.622

the distance between ab is 31.62 or√1000

What is the slope of the line?
У
1
X Х

Answers

Answer:151500

Step-by-step explanation:the is the answer

211 is 500% of what number

Answers

Answer: 42.2

Step-by-step explanation:

500/100 = 5

211/5 = 42.2

Answer:

It is 42.2!

Step-by-step explanation:

You divide 211 by 5 and get 42.2

So, 211 is 500% of 42.2! :D

Have a great day!

which values of x are solutions to the eqaution below? 4x^2-30=34​

Answers

+4,-4 is your answer I hope :)

DOES ANYONE KNOW HOW TO FIND WHAT SLOPE REPRESENTS??? PLEASE HELP ME

Answers

Answer:

slope intercept form.

Step-by-step explanation:

heres the slope intercept form: y=mx+b.

this equation is what you will use to plot lines on graphs, points etc.

the letter b represents the y-intercept, where the line crosses a number on the y intercept on the graph. for example, an initial payment of 30 dollars.

the mx represents slope, or rate of change. for example, paying 5 dollars an hour.

you wouldn't plug a number to the x, but instead the m, because you'd multiply the m with the x.

Based on your question, I think you are asking what slope is. Slope is the rate of change.

Hope this helps!

NEED ANSWER FAST PLEASE HELP!!!

If y − 4 = 2x, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?
A. {(2, 1), (4, 2), (6, 3)}
B. {(1, 2), (2, 4), (3, 6)}
C. {(4, 0), (6, 1), (8, 2)}
D. {(0, 4), (1, 6), (2, 8)}

Answers

Answer:

D

Step-by-step explanation:

plug in the coordinates for x and y

Carlos completed x3 squats as part of his football workout. if x=5, how many squats did he complete?

Answers

3x

We need to substitute x with 5 because the question is asking how many squats Carlos has completed if he completed 5.

3 x 5 = 15

Therefore, Carlos completed 15 squats as part of his football workout.

By the way, this question is very simple and basic. I recommend reviewing Algebra for your benefit/

I GIVEEEEEEEEEEEEEEEEEE BRAAINLILSTER

Answers

Answer:

thx for giving brainliest

Which of the following is the equation of the line that is perpendicular to y=-4x-5 and goes through the point (-2, 3)? Question 14 options: y=-4x-5 y=-1/4x+5/2 y=1/4x+7/2 y=4x+11

Answers

Answer:

The equation of the perpendicular line to y=-4*x-5 is [tex]y=\frac{1}{4}*x+\frac{7}{2}[/tex]

Step-by-step explanation:

Perpendicular lines are two or more lines that intersect at an angle of 90 degrees. Being  y = m * x + b the equation of a line, two lines, with a slope other than zero, are orthogonal or perpenducillary if and only if the product of their slopes is -1. In other words, if two lines are perpendicular, they have their slopes reversed and sign changed.

In this case, with y = -4x-5 the slope will be -4. So the slope of the perpendicular line will be [tex]\frac{1}{4}[/tex]. Then the equation of the perpendicular line will be:

[tex]y=\frac{1}{4}* x+b[/tex]

To find the value of b, you know the value of the point (-2,3). So x = -2 and y = 3. Replacing in the equation of the perpendicular line, you have:

[tex]3=\frac{1}{4}* (-2)+b[/tex]

Solving, you get:

[tex]3=-\frac{1}{2}+b[/tex]

[tex]3+\frac{1}{2}=b[/tex]

[tex]\frac{7}{2}=b[/tex]

The equation of the perpendicular line to y=-4*x-5 is [tex]y=\frac{1}{4}*x+\frac{7}{2}[/tex]

Please help, worth 20+! GIVE ANWERS! PLEASE ANDty

Answers

[tex]\huge\underbrace\mathtt\blue{∆ᴀɴsᴡᴇʀ∆}[/tex]

[tex]1) \: \: \: \frac{34}{100} = 0.34[/tex]

[tex]2) \: \: \: \: \frac{23}{50} = \frac{23 \times 2}{50 \times 2} = \frac{46}{100} = 0.46[/tex]

[tex]3) \: \: \: \frac{6}{8} = \frac{6 \times 125}{8 \times 125} = \frac{750}{1000} = 0.008[/tex]

[tex]4) \: \: \: \frac{1}{3} = 0.3[/tex]

(for no. 4 check the image in the attachment)

Select the expressions that are equivalent to 8(6m).

Answers

[tex]\textsf{Hey there!}[/tex]

[tex]\text{Select the expressions that are equicalent to 8(6m)}\downarrow[/tex]

[tex]\text{We DON'T have any like terms so we CAN'T pair them off!}[/tex]

[tex]\mathsf{8(6m) \rightarrow 8 \times 6 \times \ m}\\\mathsf{8\times 6 = 48}}\\\mathsf{48\times\ m = 48m}\\\\\\\boxed{\boxed{\mathsf{Answer: \bf{48m}}}}\checkmark[/tex]

[tex]\textsf{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\dfrac{\frak{LoveYourselfFirst}}{:)}[/tex]

Andrew had $120. He gave one-third of that amount to charity. How much money did he give to charity? a. 40 c. 60 b. 90 d. 80 Please select the best answer from the choices provided A B C D

Answers

1/3. 120 x 1/3 = 40. it could also be written as 120/3. the answer is 40$ to charity
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