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
Igoryamba
3 years ago
13

Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. Thi

s method is designed to increase the likelihood that each baby will be a​ girl, but assume that the method has no​ effect, so the probability of a girl is 0.50.5. Assume that the groups consist of 3636 couples. Complete parts​ (a) through​ (c) below.
Mathematics
1 answer:
Dovator [93]3 years ago
8 0

Complete question:

Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby this mention is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect so the probability of a girl is 0.5. Assume that the group consists of 36 couples.

A) Find the mean and standard deviation for the number of girls in groups of 36 births.

B) Use the range rule of thumb to find the values separating results that are significantly low and significantly high.

C) Is the result of 33 girls significantly high? A result of 33 girls would suggest the method is effective or is not effective?

Answer:

a) mean = 18

Standard deviation =3

b) low range = 12

High range = 24

c) The result of 33 girls is significantly high. Yes, the method is effective.

Step-by-step explanation:

Given:

p = 0.5

n = 36

a) The mean is the product of n and p

Mean u = np

u = 36 * 0.5 = 18

The standard deviation is the square root of the product of n and p&q.

S.d ó = \sqrt{npq}

= \sqrt{np(1-p)}

= \sqrt{36(0.5)(1-0.5)} = \sqrt{9} = 3

b) To find the range rule of thumb:

• For low range

Low range = u - 2ó

= 18 - (2 * 3)

= 12

• High range

= u + 2ó

= 18 + (2*3)

= 24

c) The result is significantly high, because 33 is greater than 24 girls.

A result of 33 girls would prove the method as effective.

You might be interested in
What’s the domain of (3,7),(4,1),(-1,-8),(2,2),(4,-1)
mafiozo [28]

Answer:

{-1,2,3,4}

Step-by-step explanation:

The domain is the input values

(3,7),(4,1),(-1,-8),(2,2),(4,-1)

(3,4,-1,2,4)

We do not list the repeats

(3,4,-1,2)

(-1,2,3,4)

6 0
3 years ago
Express as a single fraction a/b+b/b - b/a-a/a​
Harrizon [31]

Answer:

a exponent 2-b exponent 2

ab

5 0
3 years ago
(X^2+6x+9)/(x+2) quotient
Shalnov [3]

             x+4
         ___________
(x+2)|(x^2+6x+9)
        -x^2-2x
         __________
                 4x+9
               -4x-8
         __________
                        1

so the quotient is:

(x+2)(x+4)+1/(x+2)
6 0
3 years ago
In 3-4 sentences, describe how you would find a line parallel to the line 2x + 5y = 15 that goes through the point (-10, 1). Be
larisa86 [58]

the parallel line is 2x+5y+15=0.

Step-by-step explanation:

ok I hope it will work

soo,

Solution

given,

given parallel line 2x+5y=15

which goes through the point (-10,1)

now,

let 2x+5y=15 be equation no.1

then the line which is parallel to the equation 1st

2 x+5y+k = 0 let it be equation no.2

now the equation no.2 passes through the point (-10,1)

or, 2x+5y+k =0

or, 2*-10+5*1+k= 0

or, -20+5+k= 0

or, -15+k= 0

or, k= 15

putting the value of k in equation no.2 we get,

or, 2x+5y+k=0

or, 2x+5y+15=0

which is a required line.

6 0
1 year ago
Fill in the blanks to solve 900 x 6
Fynjy0 [20]

Answer:

The answer is 900 ×6= 5,400 u can use a calculator

8 0
2 years ago
Other questions:
  • A board game has 25 cards. Each card is printed with a number from 1 through 25. Sameer shuffled the cards, and then selected 1
    10·2 answers
  • Finding the expression <br> ANSWER ASAP PLEASE!!!!!
    13·1 answer
  • Drag steps and expressions into place to explain and show how to evaluate a • b for a = 5 and b = 8.
    8·1 answer
  • Eighty percent of the fans left the competition happy. If 800 fans left the competition unhappy, how many left happy ?
    14·1 answer
  • Given h(t)=-2(t+5) squared +4, find h(-8)
    11·2 answers
  • A machine prints 8 banners in 120 seconds how many seconds does it take to print one Banner
    5·2 answers
  • A cell phone company charges $25 per month, plus $0.10 per text message sent. Before taxes, Susie’s bill was $80 for 3 months of
    13·2 answers
  • In OE, m overline HQ =48,HI=JK , and JR = 7.5 . Find each measure. 1. m overline HI 2. m overline QI E AK 3. m overline JK 4. HI
    6·1 answer
  • Plz help will be marked BRAINLIEST !!!
    6·2 answers
  • Find the perimeter. Simplify your answer
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!