1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
user100 [1]
3 years ago
6

Does the mean of the sample proportions equal the proportion of girls in two​ births? A. ​Yes, both the mean of the sample propo

rtions and the population proportion are 1/4. B. ​No, the mean of the sample proportions and the population proportion are not equal. C. ​Yes, both the mean of the sample proportions and the population proportion are 1/3. D. ​Yes, both the mean of the sample proportions and the population proportion are 1/2.
Mathematics
1 answer:
Lostsunrise [7]3 years ago
6 0

Answer:

the answer is a

Step-by-step explanation:

You might be interested in
7cm<br> 9cm<br> 4cm<br> 4cm<br> Find the area
sladkih [1.3K]

Step-by-step explanation:

lenght =4+4+7cm

=15cm

breadth=9cm

Now,

Area(A)=L×B

=15cm×9cm

=135cm^2

7 0
3 years ago
Plz help!!!!!!!!!!!!!!!
julsineya [31]

Hey!

Hope this helps...

~~~~~~~~~~~~~~~~~~~~~~~~

Generally what I like to do, to solve questions like this is to substitute the given answers into the equation to solve this faster...

Equation: x^2 + 10x + 12 = 36

A.) (-12)^2 + 10(-12) + 12 = 36

144 - 120 + 12 = 36

24 + 12 = 36

36 = 36

(2)^2 + 10(2) + 12 = 36

4 + 20 + 12 = 36

24 + 12 = 36

36 = 36


Since we found the answer with the first try, we already know the correct answer is A.

So...

The Correct answer is: A.) x=-12 or x=2

4 0
4 years ago
Read 2 more answers
Minnie organizes data in a table to show the net change in the number of people subscribing and unsubscribing to her Website eac
maw [93]

Answer:

<u>4</u>( -1 <u>-11 </u>)+2 (<u>17</u>)

<u>-14</u>

Step-by-step explanation:

This one requires more abstract thinking than you'd expect!

So essentially you want to count up how many -11's there are, -1's and 17's.

There are four -11's and four -1's, and two 17's.

So that means 4 x -11 + 4x-1 + 2x17 = The Total Sum of Subscribers

We can "factor out" a 4 from the -11 and -1.

4( -1 - 11) + 2(17)

So then you'd solve that and get

<u>-14</u>

4 0
3 years ago
Find the area of the surface. The surface with parametric equations x = u2, y = uv, z = 1 2 v2, 0 ≤ u ≤ 2, 0 ≤ v ≤ 1.
ehidna [41]

Answer:

Area = 32/3

Step-by-step explanation:

x = u ²

y = uv

z = 12v ²

0 ≤ u ≤ 2

0 ≤ v ≤ 1

Since ru = <2u, v, 0> and rv = <0, u, 24v>, we have

Where ru is the differentiation of x, y, z with respect to u and rv is the differentiation of x, y, z wit respect to v.

we find the cross product of ru and rv

ru × rv = 24v²i - 48uv²j + 2u²k

absolute value of ru × rv = 2u² + 24v²

We can now find the area

∫₀² du ∫₀¹ dv (2u² + 24v²) = ∫₀² du [2u²v + 8v³]₀¹ = 32/3

Detailed description can be found in the attachment

5 0
3 years ago
Read 2 more answers
A given line has the equation 2x + 12y = −1. What is the equation, in slope-intercept form, of the line that is perpendicular to
VikaD [51]

Answer:

y = 6x + 9

Step-by-step explanation:

The equation of a line in slope- interceot form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange 2x + 12y = - 1 into this form

Subtract 2x from both sides

12y = - 2x - 1 ( divide all terms by 12 )

y = - \frac{1}{6} x - \frac{1}{12} ← in slope- intercept form

with slope m = - \frac{1}{6}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-\frac{1}{6} } = 6

Note the line passes through (0, 9) on the y- axis ⇒ c = 9

y = 6x + 9 ← equation of perpendicular line

3 0
3 years ago
Read 2 more answers
Other questions:
  • How to solve 5(x+1)(x+1)(x+7)
    9·1 answer
  • Ronald's apartment building has 17 apartments on each floor. There are 6 floors in the building. What is the total number of apa
    6·2 answers
  • Avery wants to buy her favorite cereal but wants the cheapest price per ounce. Store A has a 32-oz box for $3.78. Store B has a
    11·2 answers
  • Find the amount of the discount on a $234 item with a discount of 15%
    11·2 answers
  • L-28l - l-1l how do we do this? (I would be happy if you explain)
    14·1 answer
  • Help?<br> I really don't know how to do this, please help me
    10·1 answer
  • A toy factory makes 15 teddy bears every 10 minutes. The factory makes teddy bears for 8 hours each work day. What is the fewest
    9·1 answer
  • Find the quotient of the complex numbers. Express your answer in trigonometric form. SEE ATTATCHED
    13·1 answer
  • The method of tree ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population o
    11·1 answer
  • In the number 9,999.999, how does the 9 in the hundredths place compare to the 9 in the place to its left?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!