For a certain population of sea urchins, 16% are longer than 8 inches. A random sample of 75 sea urchins will be selected. What is the standard deviation of the sampling distribution of the sample proportion of sea urchins longer than 8 inches for samples of size 75?

Answers

Answer 1

Answer:

0.042

Step-by-step explanation:

Given :

p = 16% = 0.16

q = 1 - p = 1 - 0.16 = 0.84

Sample size, n = 75

The standard deviation of sampling distribution :

√(pq)/n

√(0.16 * 0.84) / 75

√0.1344 / 75

√0.001792

Standard deviation of sampling distribution = 0.0423320


Related Questions

This is geometry btw Find the volume of the figure

Answers

Answer:1407.4 rounded to nearest tenth

Step-by-step explanation:

Andrew has a round trampoline with a diameter of 4 yards. What is the circumference of the trampoline?

Answers

You would use this formula for the problem...

(C=2πr) The circumference equals 2 multiplied by pi and radius.

In this problem it says diameter, but the diameter is just twice the length of the radius, so just multiply the radius by 2. Plugin your number.

C=2π(2) since 2 is half of 4, that's your radius.

Your answer is roughly C= 12.57.

You're welcome.

I need help with this problem please

NO LINKS

Answers

1) CLIMBS

2) MISACT

3) ABLISM

what is the area of the triangle in square inches?​

Answers

Answer:

22in.^2

Step-by-step explanation:

Area of a triangle formula is A= b*h* 1/2

(b= base  h= height)

the base is 8

the height is 5 1/2

8*5 1/2

----------

  2

5  1/2 = 5.5

8* 5.5 = 44

44/2 = 22

calculate the difference between the two times.
8: 15 am. or pm

3: 30 am or pm.

Answers

Answer:

5:15 pm is the answer for the question

solve for x: 2x-y=3 if you can show work thanks.

Answers

Answer:

x = 3/2 + y/2

Step-by-step explanation:

:)

X=3+y/2 hope that may be the answer

10x— 9y = 10
8x+9y=10​

Answers

Answer:

x=10/9

y=10/81

Step-by-step explanation:

A circle has a center at A (-3,4) and radius of 4 units. What is the equation of the circle? Show work!

Answers

Answer:

The equation of the circle is (x+3)^2 + (y-4)^2 = 16.

Step-by-step explanation:

The equation of a circle can be calculated if the center and the radius are known. The equation of a circle is given by  (x-h)² + (y-k)² = r²

Where  (h, k) = center coordinates  and r = radius.

2.
Abus drove 70 miles in 2 hours. What is the unit rate?
d
b
70 miles
35 miles
140 miles
140 miles
1 hour
2 hours
1 hour
4 hours
No

Answers

Answer:

The unit rate is 35 miles per hour

Step-by-step explanation:

Miah has a fish tank were she keeps her fish! Find the volume of the fish tank

Answers

To do this, you’ll have to utilize the formula for volume.

Volume = length•width•height
V = 12•6•4
V = 12•24
V = 288 cm^3

** Remember that volume is always cubed.

In rhombus ABCD shown below, AB=17 and AC=16 determine the length of BD without (hint , not with trigonometry)

Answers

Answer:

[tex]BD = 30[/tex]

Step-by-step explanation:

Given

[tex]AB = 17[/tex]

[tex]AC = 16[/tex]

See attachment

Required

Find BD

If AC = 16, then:

[tex]AO = 16/2[/tex] i.e. half the diagonal AC

[tex]AO = 8[/tex]

The diagonals of a rhombus are perpendicular.

This implies that we can apply Pythagoras theorem.

Using Pythagoras theorem on triangle AOB, we have:

[tex]AB^2 = AO^2 + OB^2[/tex]

[tex]17^2 = 8^2 + OB^2[/tex]

[tex]289 = 64 + OB^2[/tex]

Collect like terms

[tex]OB^2 = 289 - 64[/tex]

[tex]OB^2 = 225[/tex]

Take positive square roots of both sides

[tex]OB = 15[/tex]

To solve for BD, we use:

[tex]OB = \frac{BD}{2}[/tex] --- i.e. half the diagonal BD

[tex]BD = 2 * OB[/tex]

[tex]BD = 2 * 15[/tex]

[tex]BD = 30[/tex]

50 points precalc math, please please help me I haven't been able to solve this in 2 days. I've looked everywhere and asked so many ppl to no avail :'(

Answers

Answer:

2

Step-by-step explanation:

this answer is right you can see hear

Answer:

The correct answer is z=2 I did the math sorry if it is not correct!

I just need to figure this out.

Answers

Answer:

V=π(d/2)^2h

a) V = 3.14 x (15/2)^2 x 5.7

V= 1007.27

I have to go back to class i gave the formula and ex. pls I hope this helped

If a pound of ham costs $5.25, what is the approximate cost of 7
ounces?
A. $2.30
B. $36.75
C. $5.25
O D.
D. $2.63

Answers

The answer is B.$36.75

2 and 1/2 divided by 3/8 as a fraction

Answers

Answer:

6 and 2/8 or reduced to 6 and 1/4

Step-by-step explanation:

what is the CORRECT answer?

Answers

Answer:

bro use the dang fromula

Step-by-step explanation:

L*W=A divided by 2

4/5 divided by 1/3 =

hurry up gamers

Answers

Answer:

2 2/5 or 12/5

Step-by-step explanation:

Decimal form: 2.4

Improper fraction: 12/5

Mixed Fraction/Simplified: 2 2/5

Answer:

12/5 or 2 2/5

Step-by-step explanation:

Someone, Please help asap! :)

Answers

The answer is D I believe

Please help me with this question

Answers

Answer:

B) 61° + 24° =

Step-by-step explanation:

PLEASE HURRY, ME AND MY FRIEND NEED HELP WITH THIS QUESTION
Terri has a balance of $795 on his credit card. He is currently making monthly credit card payments of $20 a month. What will happen if he increases the amount he is paying by $18 a month?
A. It will take him less time to repay the loan
B. The interest rate will increase
C. It will take him longer to repay the loan
D. The interest rate will decrease

Answers

Answer: A

Step-by-step explanation:

If he increases the amount then the less time it will take to pay the loan

I need helppppp :(((

Answers

The answer is 111 square units. You do this by using the formula
111 square units hope this helped but all you have to do is use the formula for A

Sooo....

solve 3x + 3/5 equal or > 4/5.

yeah if u dont understand i dont blame ya.

Answers

The answer would be x equal or greater than 1/15

1/5 could be replaced with 0.06


1/5 x 5 1/2 =

Can someone help me ?

Answers

Answer:

1/2

Step-by-step explanation:

reduce the numbers with the greatest common factor 5

1/5×5 1/2

1/2

Answer:

this is the answer hope it helps

QUICKK The Johnson family went to a socially distance movie and paid $30 for two adults and two children the modern family went to the same movie and paid 35 for two adults and three children what was the price of an adult ticket

Answers

Answer: adults = $10

Step-by-step explanation:

x = adults

y = children

2x + 2y = 30

2x + 3y = 35

Using the elimination method:

2x + 2y = 30

-2x - 3y = -35 (multiplied by -1, to give 2x -2x = 0)

Solve for y...

2y = 30

-3y = -35

Add together...

-y = -5

Multiply by -1 to give positive value for y...

y = $5

Plug into one of the original equation to find x...

2x + 10 = 30

2x = 20

x = $10

verify the following identity: sinx+cosx×cotx=cscx​

Answers

Left Hand Side :
sin
x
+
cos
x
cot
x
We know that
cot
x
=
cos
x
sin
x
Therefore
sin
x
+
cos
x
cot
x
=
sin
x
+
cos
x

(
cos
x
sin
x
)
=
sin
x
+
cos
2
x
sin
x
=
sin
2
x
+
cos
2
x
sin
x
(We know the Trigonometric Identity
sin
2
x
+
cos
2
x
=
1
)
=
1
sin
x
=
csc
x
(Because Cosecant is the reciprocal of Sine)
Hence Proved.

For positive acute angles AA and B,B, it is known that \cos A=\frac{24}{25}cosA= 25 24 ​ and \sin B=\frac{11}{61}.SinB= 61 11 ​ . Find the value of \sin(A+B)sin(A+B) in simplest form.

Answers

Answer:

684/1525

Step-by-step explanation:

Given

cosA = 24/25

SinB = 11/61

Sin(A+B) = SinAcosB + CosAsinB

Get SinA

Since

Cos A = adj/hyp

adj = 24

hyp = 25

opp² = 25² - 24²

opp² = 625 - 576

opp² = 49

opp = √49

opp = 7

sinA = opp/hyp

sinA = 7/25

Also if SinB = 11/61

opposite = 11

Hypotenuse = 61

adj² = 61² - 11²

adj² = 3,721 - 121

adj² = 3600

adj = √3600

adj = 60

Cos B = adj/hyp

CosB = 60/61

Sin(A+B) = SinAcosB + CosAsinB

Sin(A+B) = 7/25(60/61) + 24/25(11/61)

Sin(A+B) = 420/1,525 + 264/1,525

Sin(A+B) = 684/1525

A community center rents thier hall for special events. They charge a fixed fee of $200 plus an hourly fee of $22.50. Lin has $300 to spend on renting the hall for a fundraiser white and solve an inequality that represents this situation

Answers

Answer

[tex]300 \geqslant 22.5x + 200[/tex]

Step-by-step explanation:

300 is less than or equal to 22.5x + 200

the budget is 300 so you can't go past that number. the appropriate inequality sign for this would be less than or equal to the following equation: $22.5 x (where x= number of hours) + the fixed fee of $200

don't include $ (or other units of measurements) in equations!!

What is volume? USE YOUR WORDS NOT G00GLE"S. (if answer is in a folder or link please dont answer) thank uu ​

Answers

Answer:

Typically, volume is used to measure the capacity of a container/bottle/etc. It is used alongside measurements for liquids, like mL or L.

Step-by-step explanation:

Which of the following are identities? Check all that apply.

Answers

Answer: The correct identities are: 1 + tan^2x = sec^2x 1 + cot^2x = csc^2x sin^2x + cos^2x = 1 which correspond to B and D

Step-by-step explanation:

T////T

im ok at math if its wrong im sorry T^T

Answer:

A, B, C, and D.

Yeah, I bet you didn't see this one coming.

Hope this helps!

help me please thank you

Answers

Answer:A

Step-by-step explanation:

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