A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 678 babies were​ born, and 339 of them were girls. Use the sample data to construct a ​99% confidence interval estimate of the percentage of girls born. Based on the​ result, does the method appear to be​ effective?

Answers

Answer 1

Answer:

We are 99% confident that the true proportion of female babies is captured by the interval from

0.8001

to

0.8999

.

Step-by-step explanation:


Related Questions

The size of a large milkshake is 1.4 times the size of a medium milkshake. Write 1.4 as a percent. F u

Answers

1.4 as a percent is 140%

Answer:

1.4%

Step-by-step explanation:

1.4 = [tex]\frac{14}{1000}[/tex]

    =[tex]\frac{14/10}{1000/10}[/tex]

    =[tex]\frac{1.4}{100}[/tex]

    =1.4%

Can I have help I am stuck on this problem It would mean the world if u helped me and tysm!! =-)

Answers

132.3328 square centimeters

The area of a rectangle is length x width:
14.26 cm x 9.28 cm = 132.3328

Area is measured in square centimeters, in this case

FINAL ANSWER:

132.3328 square centimeters

HOPE THIS HELPS!

Answer:

132.3328 or 132.33 if you round do the nearest hundredth

Step-by-step explanation:

To find area, just multiply length by width. 14.26x9.28=132.3328

20+20+60+40+20+20+10+10

Answers

Answer:

200

Step-by-step explanation:

Answer:

200 :)

hope that helps!

What is the value of z in the equation 3z+9=z?

Answers

In the exact form, Z equals -9/2

a small publishing company is planning to publish a new book. Let C be the total cosy of publishing the book. Rest is in the picture help please

Answers

The domain is the number of copies and the values is 0 to 200, while the range is the cost of publishing and the values is 5000 to 5500

How to determine the domain and the range?

The function is given as:

C = 25N + 500

From the question, we understand that the company can only publish up to 200 books.

This means that the possible number of books to publish is 0 to 200 (this represents the domain)

At the minimum number of publish (i.e. 0), we have:

C = 25 * 0 + 500 = 50

At the maximum number of publish (i.e. 200), we have:

C = 25 * 200 + 500 = 5050

Hence, the domain is the number of copies while the range is the cost of publishing

Read more about domain and range at:

https://brainly.com/question/2264373

#SPJ1

Which inequality about the number line shown below is true

Answers

i got it wrong dont lisen to this

Answer:

option D

Step-by-step explanation:

D is equal to 0 that is greater than B which is -2 by theory

scale on a map is 1:800000. motorway is 120 km long . what distance will it be on the map​

Answers

Answer:

Multiply the number of inches on the map times the scale to determine the true distance. For example, if the distance on the map was 5.5 inches and the scale was 1:6,336,000, the true distance would be 550 miles. To convert an area, convert the dimensions using the scale and then find the true area.

Motorbikes have two wheels and cars have four wheels. There are a number of
motorbikes and cars in a parking lot. There are 14 motorbikes. Altogether, there are
324 wheels. How many cars are in the parking lot?
A.74 cars
B.148 cars
C.296 cars
D.310 cars​

Answers

Answer:

74 Cars

Step-by-step explanation:

If each motorbike has 2 wheels then we need to find how many wheels the motorbikes already take up.

We do this by doing 14*2 and we get 28 wheels.

Afterwards, we subtract this from the total of 324 to see how many wheels are left over. 324-28=296

Now we know the remaining amount of wheels and with this we can get our final answer!

Since there are 296 remaining wheels and each car takes up 4 we can divide 296 by 4 to see how many cars would be able to get their full set of tires.

296/4 = 74 and that;s how you get 74 cars!

*I think LOL*

a driver travelled a distance of 864 km in 12 hours what is the speed of car

Answers

answer:

speed= 72 km - per • hour

Answer:

Speed of car = 72 km per hour


In the diagram below of RST. L is a point on RS, and M is a point on RT, such that LM parallel to ST
If RL = 3 LS= 12 LM=7. and ST=x+ 2, what is the length of ST?

Answers

Answer:

ST is 28

Step-by-step explanation:

Using the similarity formla

RL/LS  = LM/ST

3/12 = 7/x+2

3(x+2)=84

x +2= 84/3

x+2 =  28

x= 28-2

x = 26

ST = x+2

ST = 26+2

ST = 28

Hence the length of ST is 28

How do you know the absolute value of a number?

Answers

Step-by-step explanation:

It is very simple

Any number's absolute value should be positive

Let's say absolute value of 3 - >answer is 3

But absolute value of - 3 - > is also 3

Hope you understood it.

Answer:

Step-by-step explanation: In order to find the absolute value all you do is see what number you have and turn into an positive, say "what is the absolute value"  of -5" it would just be 5,

Hope this helps :)

Please
Solve for the value of k.

Answers

Answer:

k = 13

Step-by-step explanation:

The sum of the angles is 180 since they form a straight line

4k-7 + 90 + 3k+6 = 180

Combine like terms

7k+89=180

Subtract 89 from each side

7k+89-89 = 180-89

7k =91

Divide each side by 7

7k/7 = 91/7

k = 13

simplify the expression (c^7)^9(c^0)^5

Answers

Answer:

 c^63 Your welcome   !!

Step-by-step explanation:

What is wrong with this dot plot?

Answers

Step 1: Assess the key characteristics. Examine the peaks and spread of the distribution. ...
Step 2: Look for indicators of nonnormal or unusual data. Skewed data and multi-modal data indicate that data may be nonnormal. ...

Which of the following expressions are equivalent to 63​? Check all that are true.

Answers

Answer:

A & E

Step-by-step explanation:

Main equation: [tex]6^{3} = 216[/tex]

A. [tex]\frac{6^{7} }{6^{4}} = 6^{3} = 216[/tex]

B. 18

C. [tex](6^{1})^{2} = 36[/tex]

D. 81

E. 6 * 6 * 6 = 216

F. [tex]6^{2} + 6^{1} = 36 + 6 = 42[/tex]

Hope this helps!

Please mark as the Brainliest!

PLEASE HELP!!!!

WILL MARK BRAINLIEST!!!

Solve for X.

Multiple choice!

Thank you!

Answers

Answer:

6x - 21 = 105 (vertically Opposite angles)

6x = 105 + 21

6x= 126

x=126/6

x= 21°

That should be the fifth option

OR

Another Way of solving

(6x - 21) + 75 = 180 ( angles on a straight line)

6x -21 + 75 =180

6x + 54 = 180

6x =180 - 54

6x = 126

x=126/6

x=21°

[tex] \large \sf \star \: \green{Answer} \: \star[/tex]

x = 21 °

Step-by-step explanation:

Here,

Angle 75 ° and ( 6 x - 21 ) are on straight line so it's supplementary angles and we know that sum of all angles of supplementary angles is 180 °.So, 6 x - 21 ° + 75 ° = 180 °

6 x - 21 ° + 75 ° = 180 °

6 x + 54° = 180 ° ...( Combine like terms)

subtract 54 ° from each sides

54° - 54° + 6 x = 180 ° - 54 °

6 x = 126°

x = 126 ° / 6 ...( Divide by 6 )

x = 21 °

How many ounces in 31/2 pounds

Answers

Answer:

248 ounces

Step-by-step explanation:

I hope this helps :D

Answer:

248 ounces is the correct answer hope you will like it and Mark me as BRAINLIEST!!!!

5(a^6+2a^5)-6a(5a^4-7a^3)

Answers

Answer:

a4(5a2−20a+42)

Step-by-step explanation:

Factor 5(a6+2a5)−6a(5a4−7a3)

5a6−20a5+42a4

=a4(5a2−20a+42)

Make me brainliest!

Which function below have a zero of -2?

Answers

Answer:

H is the answer

Step-by-step explanation:

1) roots=-2, -4

2)roots=-7, 2

3)roots= -2

4)roots=-3/4, -2

5)roots= 2

Therefore, the correct answer is H

6 +7 ( □ +7 5) = 1

help me pls

Answers

Answer:

Can't be possible.

Step-by-step explanation:

Given:

6+7(x+75)=1

So according to given equation it can't be possible because when we add some value in 6 their result will be always greater than 1.

Complete the statements about the shapes on the graphs

Answers

there is nothing here

in order for the parallelogram to be a rhombus x=?

Answers

Answer:

x = 12

Step-by-step explanation:

In a rhombus, the diagonal is also the bisector of the angle, so the two vlaue must be congruent

2x + 35 = 8x- 37

6x = 72

x = 12

find the radius of a circle whose diameter is 9cm​

Answers

Answer:

The radius of a circle is 4.5 cm.

Answer:

hope it is helpful to you

2. 5 9. 14. ?. 27
18
20
21
16
Which is the missing number people :)))

Answers

Answer:

20

Step-by-step explanation:

The pattern goes

+3, +4, +5, +6, +7...

14+6=20

The missing number is 20

The answer is 20
0+2=2
2+3=5
5+4=9
9+5=14
14+6=20 <— the answer
20+7=27

Which equation best matches the graph shown below?

Answers

Answer:

y=0.5(x+6)(x+5)

Step-by-step explanation:

Since the parabola goes upwards as it expands from the vertex, the "a" value is definitely positive so the answer must be either the top-left or bottom-right. Next, use the roots to find the final answer. The roots are on the left side of the y-axis which indicates that they are negative. Now you know that the answer is the bottom-right answer because if both roots are negative, then the expressions must include addition to create 0 which is the y-value at the bases.

For one roadway section, the average number of cars passing a point is 2200 pcphpl (i.e. passenger cars per hour per lane). The cars travel at an average speed of 42 mph. What is the average distance (in feet) between common points (e.g. the front bumper) on successive cars in one lane

Answers

Answer:

The average distance between common points on successive cars in one lane is of 100.8 feet.

Step-by-step explanation:

This question is solved by proportions, using a rule of three.

The cars travel at an average speed of 42 mph

Each mile has 5280 feet, so in 1 hour, the distance is of 42 miles = 221760 feet.

2200 pcphpl (i.e. passenger cars per hour per lane).

2200 cars in 221760 feet. Thus:

[tex]d = \frac{221760}{2200} = 100.8[/tex]

The average distance between common points on successive cars in one lane is of 100.8 feet.

If f(x) = 4x - 3 and g(x) = x + 4, find (f-g)(x).

A. 3x-7
B. 5x-1
C. 5x - 7
D. 7 - 3x

Answers

9514 1404 393

Answer:

  A.  3x -7

Step-by-step explanation:

Substitute for f and g, then collect terms.

  (f -g)(x) = f(x) -g(x) = (4x -3) -(x +4)

  (f -g)(x) = 4x -3 -x -4 = (4-1)x +(-3-4)

  (f -g)(x) = 3x -7

PLease help me with this math qestion

Answers

Answer:

n+3 = 15 ; n = 12

3n -6 = 12;  n=6

Step-by-step explanation:

more than means it comes after

a number

n

3 more than

n+3

is 15

n+3 = 15

Subtract 3 from each side

n+3-3 = 15-3

n = 12

Subtract from comes after

three times a number

3n  

six subtracted from

3n -6

is 12 means equal to

3n -6 = 12

To solve add 6 to each side

3n -6+6 =12+6

3n = 18

Divide by 3

3n/3 =18/3

n =6

Answer:

A = 3 - x = 15   B = 6 - 3 times x  = 12

Step-by-step explanation:

wegnerkolmp2741o can you please answer this I will mark brainliest

An isosceles triangle has two 5.5 cm sides and two 32.4° angles. Explain how to determine the perimeter of the triangle. Include a diagram in your solution. You do NOT need to solve.

Answers

Answer:

see below

Step-by-step explanation:

The drawing in blue is what we are told in the problem.

We are given two sides and two angles.  It is an isosceles  triangle with two equal sides and two equal angles.  Draw a perpendicular bisector  ( it makes a 90 degree angle.  Now we have two identical right triangles.  We can use trig functions to find x

cos theta = adj/ hyp

cos 32.4 = x / 5.5

Solving for x

5.5 cos 32.4 =x

Now we have 2x for the third side of the triangle

2( 5.5 cos 32.4) is the third side

P = 5.5 + 5.5 + 2( 5.5 cos 32.4)

Answer:

See the Below

Step-by-step explanation:

Draw a circle with a radius of 5.5 and center at A.

Take any point B on the circle and join AB.

Draw a line thru B making an angle 32.4 with AB which intersects the circle at D. Extend AD on both sides.

Draw two circles with a radius of 5.5cm and centers B and D which intersect the line BD at E and F.

Measure length EF, which is the perimeter of triangle ABD.=20.3 cm.

Method 2. Assume that base of the triangle =x cm.

x/2= 5.5 cos 32.4 and x=11*cos 32.4 =11*0.844=9.287

Perimeter = 20.287


Which is a factor of 10?
OA. 40
B. 10
C. 30
D. 20

Answers

Answer:  B.  10

Explanation: Any number is a factor of itself.

We can rule out choices A, C and D because those values are larger than 10. They are multiples of 10, but not factors of 10.

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