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
Zarrin [17]
3 years ago
9

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 678 babies were​ born, a

nd 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?
Mathematics
1 answer:
suter [353]3 years ago
7 0

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:

You might be interested in
The perimeter of an equilateral triangle is 5.1 m. How long are its sides?
Alja [10]

Answer:

1.7 meters

Step-by-step explanation:

because an equilateral triangle has 3 sides and they are all the same you can just divide 5.1 by 3

5.1 / 3 = 1.7

it is 1.7 m

7 0
2 years ago
Read 2 more answers
SOLVE ASAP:<br> mass of 42.5 and a volume of 5.4 cm3 what is its density
Volgvan
I think it is..................
7 0
2 years ago
Read 2 more answers
Find the value for “x”; 2 – 7x = -19
Law Incorporation [45]

Step-by-step explanation:

<em>2</em><em>+</em><em>1</em><em>9</em><em>=</em><em>7x</em>

<em>2</em><em>1</em><em>=</em><em>7x</em>

<em>21</em><em>÷</em><em>7</em><em>=</em><em>7x</em><em>÷</em><em>7</em>

<em>3</em><em>=</em><em>x</em>

<em>.</em><em>.</em>

4 0
3 years ago
Help me please! which bisects the chord?
8_murik_8 [283]

Answer:

B. 3

Step-by-step explanation:

Since you are given that chord AB's length is 8 and is bisected by segment XC, that means segment BC's length is 4 and ∠XCB is a right angle. From there, we use Pythagorean Theorem to solve for length XC:

4² + b² = 5² (Or remember 3-4-5 makes a Pythagorean triple)

c = √(5²-4²)

c = 3

6 0
3 years ago
Given the two expressions below: 1) 4x2 − 8x + 9 2) 3x2 + 2y + 6 Is the sum of the two expressions above a polynomial? Why or wh
Mkey [24]
Sum of polynomials are always polynomials.

Note that despite it's name, single constants, monomials, binomials, trinomials, and expressions with more than three terms are all polynomials.
For example,
0, &pi; sqrt(2)x, 4x+2, x^2+3x+4, x^2-x^2, x^5+x/ &pi; -1
are all polynomials.

What makes an expression NOT a polynomial?
Expressions that contain non-integer or negative powers of variables, rational functions, infinite series.
For example,
sqrt(x+1), 1/x+4, 1+x+ x^2/2!+x^3/3!+x^4/4!+...., (5x+3)/(6x+7)
are NOT polynomials.

8 0
3 years ago
Other questions:
  • How do you do this 9x-3=5x-15?
    14·1 answer
  • Tim Worker is doing his budget. He discovers that the average electric bill for the year was $206.00 with a standard deviation o
    14·1 answer
  • A cyclist rides his bike at a rate of 15 miles per hour. What is this rate in miles per minute? How many miles will the cyclist
    13·1 answer
  • Perform the indicated operation.
    12·1 answer
  • Name the following segment or point.
    15·2 answers
  • Is y=6/x-2 linear or nonlinear
    12·2 answers
  • Value of x here is ????<br><br><br><img src="https://tex.z-dn.net/?f=30x%20%3D%2015%20%2B%2015" id="TexFormula1" title="30x = 15
    5·2 answers
  • Please help ASAP!!
    5·1 answer
  • Which expression is equivalent to -6(-2+2x)?<br> O −4-12%<br> O −4+2%<br> O 4-12%<br> O 4+12%
    5·1 answer
  • Plis help me here :(
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!