Answer:
Based on the confidence interval, the method appears to not bring expected results
Step-by-step explanation:
The given parameters are;
The number of babies in the study, n = 620 babies
The number of girls in the study sample = 341 girls
The proportion of girls in the study sample, [tex]\hat p[/tex] = 341/620 = 0.55
At 99% confidence level, we have the critical z = 2.576;
The confidence interval is given by the following formula;
[tex]CI=\hat{p}\pm z\times \sqrt{\dfrac{\hat{p} \cdot (1-\hat{p})}{n}}[/tex]
Plugging in the values of the variables, we get;
[tex]CI=0.55\pm 2.576\times \sqrt{\dfrac{0.55 \times (1-0.55)}{620}} \approx 0.55 \ \pm 5.14680 \times 10^{-2}[/tex]
Therefore, 0.498532 < p < 0.601468
Based on the result of the confidence interval, we can be 99% sure that the true mean is between 0.498532 and 0.601468, therefore, given that the range includes a true mean of 0.5 or 50% probability of conceiving a girl, which is the percentage predicted by genetics, the method appears ineffective
Can somebody help and explain too me cause I don’t understand please
An iPod uses a standard 1.7 volt battery. How much resistance is in the circuit if it uses a current of
0.03 amps?
Answer:
R = 56.6 ohms
Step-by-step explanation:
Given that,
The voltage of the battery, V = 1.7 volt
We need to find the resistance in the circuit if it uses a current of 0.03 A.
Let the resistance be R. It can be solved using Ohms law as follows :
V = IR
[tex]R=\dfrac{V}{I}\\\\R=\dfrac{1.7}{0.03}\\R=56.6\ \Omega[/tex]
So, the resistance in the circuit is 56.6 ohms.
hi please help i’ll give brainliest please
Answer:
18
Step-by-step explanation:
you are dividing so you have to divide both sides by 5 which will get you to 18
Answer:
X=18
Step-by-step explanation:
5x=90
you divide both sides of the equation by the same term
5x over 5
90 over 5
4. Tom rides his bike 35km north and then 450 km east. How far is he from his starting
point?
Answer:
485km
Step-by-step explanation:
Hope this helps:)
what is multimedia? explain various types of multimedia.
Answer:
multi media is the computer system that has graphics, animation, text, video , etc
1A) Quad ABCD is inscribed in the circle. Find x. *
Answer:
x = 34
Step-by-step explanation:
according to the problem ::
(2x + 9)° + (3x + 1)° = 180° [ since, the opposite angles of a cyclic quadrilateral are supplementary ]
or, 2x + 9 + 3x + 1 = 180
or, 2x + 3x = 180 - 10
or, 5x = 170
or, x = 170 / 5
or, x = 34
therefore, the value of x is 34°
hope that helped ..
Please help with this area problem:
Answer:
Answer is B hope this helps
Step-by-step explanation:
What is two over nine times by forty-five
Answer:
10
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
2/9 × 45 = 10
Review the proof of de Moivre’s theorem.
Proof of de Moivre's Theorem
[cos(θ) + i sin(θ)]k + 1
A = [cos(θ) + i sin(θ)]k ∙ [cos(θ) + i sin(θ)]1
B = [cos(kθ) + i sin(kθ)] ∙ [cos(θ) + i sin(θ)]
C = cos(kθ)cos(θ) − sin(kθ)sin(θ) + i [sin(kθ)cos(θ) + cos(kθ)sin(θ)]
D = ?
E = cos[(k + 1)θ] + i sin[(k + 1)θ]
Which expression will complete the proof?
Answer:
D
Step-by-step explanation:
Just took it.
Answer: D. cos(kθ + θ) + i sin(kθ + θ)
Step-by-step explanation:
The screenshot pretty much speaks for itself, but you can see that the proof ends with cos[(k + 1)θ] + i sin[(k + 1)θ]. That means that addition is happening in Step D, and that the expressions in the cosine and sine parts are the same. So, the correct option is D. Hope that helps!
16-2=15-1 true or false
Answer:
True because when you do 16-2 is 14 and 15-1 is 14
SOMEONE PLEASE HELP ME...
If k=
[tex] log_{2}(3) [/tex]
Rewrite
[tex] log_{2}(48) [/tex]
in terms of k.
9514 1404 393
Answer:
k+4
Step-by-step explanation:
48 = 16×3 = 2^4×3
log2(48) = log2(2^4) +log2(3)
log2(48) = 4 + k
SECOND TIME POSTING
Find the area of the shaded region.
Answer:
The answer is 25.
Step-by-step explanation:
150/6 is 25
I think that is the correct answer sorry I didn't answer before didn't see the problem.
15 Points and brainliest to whoever answers correctly
Given right triangle ABC.
To the nearest tenth of an inch, find the length of side c, the hypotenuse
13.7
1.7
14.6
1.8
Answer:
14.6
Step-by-step explanation:
For this case we have the following trigonometric relationship:
sine (x) = C.O / h
Where,
x: angle
C.O: opposite leg
h: hypotenuse
Substituting values we have:
sine (20) = 5 / c
Clearing c:
c = 5 / sine (20)
c = 14.619022
Rounding:
c = 14.6 in
Answer:
c = 14.6 in
option 4
The incenter of a triangle is the point of concurrency of the angle bisectors. Does a rectangle have an incenter?
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Answer:
if and only if the rectangle is a square
Step-by-step explanation:
The angle bisectors of a rectangle will meet at a single point if, and only if, the rectangle is a square.
In general, a rectangle does not have an incenter.
__
The incircle must be tangent to all sides of the polygon. That cannot be the case unless the rectangle has its length equal to its width. That is, it must be a square.
Enter the missing exponent.
9/49 = ( 3/7 )^
helpppppppppp me plzzzzzz
Answer:
3x - 5y = 45
Step-by-step explanation:
divide all numbers by 4
Answer:
the question is linear equation in two variables so the answer is infinitr first we will be x zero and y will be -9 and second y is zero x will be 15 by this system we get many answers
I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Step-by-step explanation:
please answer it fast with details.
Answer:
estepra gerue
Step-by-step explanation:
Solve the simultaneous equation:
6x+4y=34
3x-y=14
Answer:
x=5, y=1. (5, 1).
Step-by-step explanation:
6x+4y=34
3x-y=14
---------------
y=3x-14
6x+4(3x-14)=34
6x+12x-56=34
18x=34+56
18x=90
x=90/18
x=5
3(5)-y=14
15-y=14
y=15-14
y=1
The end point P of a line segment PQ(-3,6) and its mid point is (5,8) Find the coordinates of the end point Q
Answer:
(13, 10)Step-by-step explanation:
Let Q have coordinates x and y
Using midpoint formula we find the values of x and y
(- 3 + x)/2 = 5 ⇒ -3 + x = 10 ⇒ x = 10 + 3 ⇒ x = 13(6 + y)/2 = 8 ⇒ 6 + y = 16 ⇒ y = 16 - 6 ⇒ y = 10Q = (13, 10)....................
What is the expression of the statement " taking away 3 from four times y” ?
(a) 4y+3 (b) 3y = 4 (c) 4y - 3
Step-by-step explanation:
Join the Meet ❤️
Códe to joín :- eqt-kuxy-dpe
Everyone Can Jóin
Answer:
(C) 4y - 3
Step-by-step explanation:
"Taking away" is (-)
Four times y is 4×y or 4y
Parametric Equations
A person hits a baseball that is 2 ft above the ground with an initial speed of 150 feet per second at an angle of 16 deg with the horizontal. The ball needs to clear a 20-foot wall that is 350 feet away.
a) approximately how many seconds after the ball is hit does it hit the wall?
b) how high up does the ball hit?
c) explain why the person's hit would likely not be caught by an outfielder if the ball had been hit at a 22 deg angle with the horizontal
Im answering so you can give hawks brainliest
Please help me! This assignment is due today and i’m desperate so I made it a lot of points :) I need to know if this graph is a function or not, and the domain and range. Thanks to whoever helps!!
Answer:
this is a function
Step-by-step explanation:
there are no duplicates on the y axis so it is a function
Is there any bias in the survey question? In other words, do you think the wording of the question influences your answer? If so, what would be a better way to word the question?
Don't you think that Barry Sanders retired from the NFL too early?
Answer:
The question is pushing the point that they think that Barry Sanders retired from the NFL too early by the use of don’t, it should be worded like:
Do you think that Barry Sanders retired too early?
Hope this helps!
Estimate the sum by rounding each number to the nearest whole number and then adding.
10.6 + 7.067 + 4.78
The sum is approximately
Answer:
23
Step-by-step explanation:
10.6 > 11
7.067 > 7
4.78 > 5
11+7+5=23
NEED SOME HELP PLS!!!Word Problem Modeling
1 point
Mary is comparing the costs from two companies of having a banquet
catered. Company M charges a base fee of $60 plus $12 per guest.
Company N charges a base fee of $120 plus $9 per guest. Let "Y" represent
the total cost and "x" represent the number of guests. Which system is the
best model of this situation?
Company M: y = 60x + 12 Company N: y = 120x + 9
Company M: 60 = 12x + y Company N: 120 = 9x + y
Company M: y = 12x + 60 Company N: y = 9x + 120
Company M: 12 = 60x + y Company N. 9 = 120x + y
Answer:
work it out
Step-by-step explanation:
Company M: y = 12x + 60 Company N: y = 9x + 120
Please help.
Is algebra.
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Answer:
6. C multiply the first equation by -7 ...
7. A parallel lines
Step-by-step explanation:
6. The idea of elimination is to create equations that have opposite coefficients for one of the variables. In this set of equations, there are two simple ways to achieve that.
On is to multiply the second equation by -2 (so x-coefficients are 4 in the first equation and -4 in the second equation).
The other is to multiply the first equation by -7 (so y-coefficients are -7 in the first equation and +7 in the second equation).
This latter method is described in answer choice C.
__
7. Equations are more easily compared if they are in the same form. Here, "standard form" is nice. To put the second equation in standard form, we must remove a factor of 3 from all of the numbers:
3(2x) +3(y) = 3(4)
2x +y = 4
We see that this differs from the first equation only in that it has a different right-side constant. That means it describes a parallel line.
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!
:(
Answer:
C
Step-by-step explanation:
The Answer is C because they're both alternate angles are between the two lines intersected by the transversal
AT-Mobile advertises cut-rate phone service for $9.00 a
month plus $0.05 per text. If your budget allows you to spend
at most $25 on phone service a month, what is the maximum
number of texts you can make? Write and solve an inequality.
You bought a magazine for $4 and 6 erasers. You spend a total of $52. How much did each eraser cost?
The answer is 8 just divide 6 and 52 but take 4 away from 52 so 48 divided by 6
