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
Oliga [24]
1 year ago
10

Seventy percent of kids who visit a doctor have a fever and 21% of kids have fever and sore throats . what is the probability th

at a kid who goes the doctor has a sore throat given that he has a fever? (when entering your answer remember that the probability is a number between 0 and 1)
Mathematics
1 answer:
Neko [114]1 year ago
3 0

The probability that a kid who goes to the doctor has a sore throat given that he has a fever is <u>0.30 or 30%</u>. Computed using conditional probability.

The probability of any event A given that event B has already taken place is found using the formula P(A|B) = P(A ∩ B)/P(B). This is known as conditional probability, where P(A ∩ B) is the probability of events A and B, and P(B) is the probability of event B.

In the question, we are given that 70% of kids who visit a doctor have a fever and 21% of kids have a fever and sore throats.

We are asked to find the probability that a kid who goes to the doctor has a sore throat given that he has a fever.

We suppose the event of going to the doctor while having a fever to be B, and going to a doctor while having a sore throat to be A.

We are given that 70% of kids who visit a doctor have a fever, that is, the probability of event B, P(B) = 70% = 0.7.

We are given that 21% of kids who visit a doctor have a fever and sore throats, that is, the probability of event A and event B, P(A ∩ B) = 21% = 0.21.

We are asked to find the probability that a kid who goes to the doctor has a sore throat given that he has a fever, that is, we are asked to find the conditional probability of event A, when event B has already taken place, that is, P(A|B).

By formula, we know that:

P(A|B) = P(A ∩ B)/P(B) = 0.21/0.70 = 0.30.

Thus, the probability that a kid who goes to the doctor has a sore throat given that he has a fever is <u>0.30 or 30%</u>.

Learn more about conditional probability at

brainly.com/question/10739997

#SPJ4

You might be interested in
Please help!!! Will give brainly!! 50 points
AleksAgata [21]

2. Angle Addition Postulate as they are adding both angles

3. 60 + 40 = m <ABC because it's a substitution

4. 100 = m <ABC as it is simplified already

5. Definition of obtuse angle

6 0
3 years ago
Read 2 more answers
A machine used for packaging seedless golden raisins is set so that their standard deviation in the weight of raisins packaged p
Kazeer [188]

Answer:

population standard deviation does not differ from 0.25

Step-by-step explanation:

The hypothesis :

σ² = 0.25²

σ² ≠ 0.25²

The Chisquare statistic, χ²: (n-1)*s²/σ²

Where s² = sample variance ; sample size, n = 30

Using calculator, the sample variance, s² = 0.1646

χ² = (n-1)*s²/σ²

χ²: (30 - 1) * 0.1646 / 0.25²

χ² = (29 * 0.1646) / 0.0625

χ² = 0.3292 / 0.0625

χ² = 5.2672

α = 0.05

Using the Pvalue from Chisquare calculator ; df = 29

Pvalue = 1

Since, Pvalue > α ; We fail to reject the null and conclude that population standard deviation does not differ from 0.25

4 0
3 years ago
Mrs Rodriguez will make name tags for each of the 45 choir members and 30 orchestra members the materials for each name tag cost
n200080 [17]
45 x 0.44 = ?
30 x 0.44 = ?

Then add the two answers together.
8 0
3 years ago
If a poll of 1,000 voters had been randomly sampled from 80% of the population, what is the chance it would have erroneously pre
Viktor [21]

Answer:

lost in the world ,the person alone ,wgo may god give the work of revenge the 10000000000000 vote

7 0
3 years ago
Use the Euclidean algorithm to find the greatest common divisor d of 313,626 and 152,346. Then use this algorithm to find intege
Marat540 [252]

313,626 = 2 * 152,346 + 8934

152,346 = 17 * 8,934 + 468

8,934 = 19 * 468 + 42

468 = 11 * 42 + 6

6 divides 42, so the GCD of 313,626 and 152,346 is 6.

4 0
3 years ago
Other questions:
  • 336 oz = how many lb
    11·2 answers
  • Mr and Mrs Smith buy tickets for themselves and their children the cost of an adult ticket is 6 pounds more than the cost of a C
    11·1 answer
  • What is the value of 6 divided by 3/8
    14·1 answer
  • Helppppppppppppppppppppppppp
    7·1 answer
  • Shanti is making a patchwork quilt. Each piece of fabric has a black star on it. She uses the grid shown to plan the locations o
    12·1 answer
  • Calculate the circumference of this circle π3.14 radius= 36 in
    5·1 answer
  • If you add Natalie's age and Fred's age, the result is 42. If you add Fred's age to 3 times
    15·1 answer
  • Find an equation in slope-intercept form of the line that has slope –2 and passes through point (1,9)
    14·1 answer
  • The sum of a number, n, and a number 5 is larger than it is 41. Which of the following equations could be used to solve for the
    9·1 answer
  • 60 POINTS PLEASEEEEEEEEEEEE
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!