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
Liula [17]
2 years ago
15

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 512 babies were born, an

d 256 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:
vfiekz [6]2 years ago
3 0
Ok so what we need to do is:

<span>p = 312/624 = 0.500 best estimate
mean is p N = (0.500) 624 = 312
standard deviation is sqrt[Np(1-p)] = 12.5
 If we approximate the binomial by a Normal we would be using
 mu = 312, s.d = 12.5
 and the 99% C.I. is
mean +- 2.57 s.d
 we convert the mean to p by dividing by 624 so corresponding C.I. for p would be 0.500+ - (2.57)(12.5)/624 or 0.500+- 0.051
</span>I hope this is useful for you

You might be interested in
What is 10^4 in standard notation
NARA [144]

Answer:

10,000

Step-by-step explanation:

Standard notation is just the normal way of writing things. 10 x 10 x 10 x 10 = 10,000.

7 0
3 years ago
Read 2 more answers
Which expression simplifies 6(2 + x + x + y) using only 3 terms
almond37 [142]

Answer: 6(2+2x+1y)

Step-by-step explanation:

i think that is the anwser

4 0
3 years ago
The surface area of A and B of the following cuboid are 35 cm" and 21
sladkih [1.3K]
The surface 5 cm, and the length is 10 cm
7 0
3 years ago
Veronica rolls a six-sided die 28 times.
Contact [7]
She should expect it to land on a even number 84 times
7 0
2 years ago
Read 2 more answers
87°
Tresset [83]
B.59
Explanation: the interior angles of a triangle equal 180.
5 0
2 years ago
Other questions:
  • How do answer an equation that have decimals/ percentage
    7·2 answers
  • Jane has a gift card with a balance of $100 She buys several t-shirts that cost $15 each After the purchases her gift card balan
    10·1 answer
  • 1. Which of the following is equivalent to 22/12?
    6·1 answer
  • Michelle is planting flowers in her garden. She wants the ratio of daisies to carnations to be 3 to 2. Michelle wants to plant a
    9·2 answers
  • 31.<br> 4xº<br> (3y + 2)°<br> 52°<br> What are the values of x and y
    9·1 answer
  • A 2-gallon jug of water costs $8.64. What is the price per cup?
    7·2 answers
  • Find: (a) the equations of the graphs
    13·1 answer
  • Geometry need answer to this due soon ​
    11·1 answer
  • Is 17/2 rational or irrational?
    9·2 answers
  • The regular price of a tennis racquet is $79.99 and the sale price is $64.99. Find the percent of discount to the nearest whole
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!