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
o-na [289]
3 years ago
5

Sickle cell anemia is a genetic blood disorder where red blood cells lose their flexibility and assume an abnormal, rigid, �sick

le� shape, which results in a risk of various complications. If both parents are carriers of the disease, then a child has a 25% chance of having the disease, 50% chance of being a carrier, and 25% chance of neither having the disease nor being a carrier. If two parents who are carriers of the disease have 3 children, what is the probability that
(a) two will have the disease? (b) none will have the disease?

(c) at least one will neither have the disease nor be a carrier? (d) the first child with the disease will the be 3rd child?
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
5 0

Answer:

Step-by-step explanation:

Given that,

  • p ( probability that the child has disease) = 25% = 0.25
  • n = number of children = 3

The probability mass function of binomial distribution is,

  • (P = X) = (nCx) X (p)^x X (1 - p)^n-x ; x = 0, 1, 2 ,3
  • = 3Cx X (0.25)^x X (1 - 0.25)^3-x ; ( n = 3, p = 0.25

a) P ( two will have disease)

p ( X = 2) = 3C2 X (0.250^2 X (1 - 0.25) ^3-2

= 0.1406

b) P ( none will have disease)

p (X = 0) = 3C0 X (0.25)^0 X (1 - 0.25)^3-0

= 0.4219

c) P (neither having the disease nor being a carrier) = 25% = 0.25

The probability that at least one will neither having the disease nor being a carrier ;

P(X> or equals to) = 1 - P(X < 1)

= 1 - P( X = 0)

= 1 - 3C0 X (0.25)^0 X (1 - 0.25)^3-0

= 0.5781

d) p( the first child with the disease will the be 3rd child)

P(X = x) = (1-p)^x-1 X p

p( X= x) = ( 1 - 0.25 )^x -1 X 0.25

for third child = P(X = 3) = (1 - 0.25)^3-1 X (0.25)

= 0.1406

You might be interested in
Which of the following represents x =1/2 y written in general form?
Harman [31]
General form= x-1/2 y=0             
3 0
3 years ago
Read 2 more answers
one year farmers recieved an average of $13.145 per bushel of wheat. How much did the farmer receive for selling 100 bushels of
djyliett [7]

multiply the 2 numbers together

100 x 13.145 = $1,314.50

3 0
3 years ago
Please help explanation if possible
Vilka [71]

Answer:

Number of years between 1950 and 2100 =

2100 - 1950 = 150 \: years

150 = 50 + 50 + 50 years.

2500000 \times 150 = 375,000,000

So, total population in 2100 is 375,000,000.

8 0
3 years ago
A box of cereal states that there are 78 calories in a three fourths ​cup serving. What is the unit rate for calories per​ cup?
ladessa [460]

Answer:

See below.

Step-by-step explanation:

Unit rate = 78 / 3/4

= 78 * 4/3

= 26*4    (because 78 / 3 = 26)

= 104 calories per cup

There are 2 * 104 = 208 calories in 2 cuos of cereal..

4 0
3 years ago
Read 2 more answers
Martin ran 6.5 miles in one hour. At that speed, how many miles will he<br> three hours?
NNADVOKAT [17]
ANSWER: Martin will run 19.5 miles in 3 hours.

STEP-BY-STEP EXPLANATION: 6.5 x 3 = 19.5
7 0
3 years ago
Read 2 more answers
Other questions:
  • What percent of 75 is 15
    6·2 answers
  • How to do this equation by elimination 8x +14y= 4 and -6 + -7y =-10
    15·2 answers
  • Line g is on plane s. True or false?
    14·1 answer
  • How do you subtract 9 2/6 - 6 5/6 =
    11·2 answers
  • B) Find the value of 5^-3 x 2^-1
    12·2 answers
  • HELP ASAP I WILL MARK BRAINLEST
    5·1 answer
  • Jacqueline will spend a fair spinner with the numbers 0 1 2 3 and 4 a total of three times if event a spinner lands on numbers a
    12·1 answer
  • RECEIVE 50 POINTS FOR THIS!!!!!!!!!! EASY QUESTION
    13·1 answer
  • Hey what's the answer !!<br><br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B98%20-%20%28%2017%29%7D%20" id="TexFormula1" titl
    9·2 answers
  • Why would i use square root to solve this quadratic equation?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!