Answer:
0.9851 = 98.51% probability that the person is actually infected.
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Positive test
Event B: Infected
Probability of a positive test:
99% of 25%(People have the disease).
0.5% of 100 - 25 = 75%(People do not have the disease). So
[tex]P(A) = 0.99*0.25 + 0.005*0.75 = 0.25125[/tex]
Probability of a positive test and being infected:
99% of 25%, so:
[tex]P(A \cap B) = 0.99*0.25 = 0.2475[/tex]
What is the probability that the person is actually infected?
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.2475}{0.25125} = 0.9851[/tex]
0.9851 = 98.51% probability that the person is actually infected.
Evaluate the following expression.
9 +62 – 2.8=
Answer: I think it’s 68.2
Answer:
68.2 for sure
Step-by-step explanation:
Can anyone please help me answer the
PICTURE IS PROVIDED!
Answer:
∠a = 29° (alt. int. angles)
∠b = 46° (alt. int. angles)
∠1 = ∠a + ∠b
= 29° + 46°
= 75°
PLEASE HELP I WILL MARK BRAINLIEST!!!
Answer:
D: 6
Step-by-step explanation:
We know that the triangle is a right triangle
We can halve each of the sides
20/2 = 10
16/2 = 8
Pythagoream Theorem: A^2 + B^2 = C^2
C= 10
A= 8
10^2 - 8^2 = B^2
100 - 64 = 36
B^2 = 36
B = 6
Find the length of the third side. If necessary, round to the nearest tenth.This is on Pythagorean theory
Answer:
23 because the 24 side is a little bigger than the other side
Step-by-step explanation:
Find the product of C =AB.
Cu=
C12=
C21 =
C22 =
Answer:
c11= -1
c12= 3
c21= 3
c22= -3
Step-by-step explanation:
on edg
Answer: HAVE AN awesome day
Step-by-step explanation:
HELP ASAP how do I solve this problem
What is the value of x?
Nadia's monthly budget is $2,750. How much does Nadia spend on Rent in a month, in dollars and cents?
Answer:
990
Step-by-step explanation:
PLEASE HELP!!!!
What mixed number do these squares model?
19/5=?
Enter your answer
Answer:
19/5= 3 4/5.
Step-by-step explanation:
19 divided by 5 equals 3 with a left over of 4. So 3 and 4/5 should be the answer. hope this helps! have a good day!
Is 0.36279979176191 rational or irrational
Need help to solve problem‼️
Answer:
1. B
2. F
3. D
4. E
5. A
6. C
I hope that this helped
Answer:
1. B
2.F
3.D
4.E
5.C
6.A
sam bought 4kg of red apples some yellow apples and 3 kg of green apples she bought a total of 9,000 whats the mass of the yellow apples
Please help giving brainliest please help
Answer:
G
Step-by-step explanation:
In the equation, 8.5 will represent how much money Oscar earns per hour, and the x represents how many hours he works. The inequality sign shows that the sum of 8.5x and 100 has to be at least 397.50 (397.50 and up), so H and J are automatically wrong. If Oscar had given his brother 100 dollars, there would be a subtraction sign, but there is an addition sign instead, meaning he gained 100 dollars that did not come from his job. It would be the most logical to say that his brother had given it to him, so G is the correct answer.
If a model car has a scale of 3in.: 5ft., what would be the length of the model be if the actual car was 15 ft. long?
set up the ratios:
3/5 = x/15
Cross multiply:
45 = 5x
Divide both sides by 5:
X = 9
The model would be 9 inches long
Answer:
120ft
Step-by-step explanation:
Jenny is dog sitting for 13 dogs. One runs away, and she is not sure which one. There were 3 Labradors (L), 2 Golden Retrievers (G), 3 Dalmatians (D), 4 terriers (T), and 1 bulldog (B) in the original group.
What is the size of the population of dogs that could have run away from Jenny?
1
5
11
13
Answer:
5
Step-by-step explanation:
It is 5 because she originally had 13. There are 5 types of dogs she was dog-sitting. There are 5 possible types of dogs that ran away.
I WILL GIVE YOU BRAINERLEST AND A LIKE
Find the area of the parallelogram.
Answer:
i am not very sure but i think its 50in
Step-by-step explanation:
area of parallelogram is height multiplied by the base
hope this helps
The sum of 10 and hans savings is 49. Use the variable h to represent Hans savings.
Answer:
39 I believe. The question is a little confusing.
Step-by-step explanation:
49-10=h 39=h
Not sure if this is what you want the question is worded weirdly.
Last year, your salary was $33,975. This year, your boss tells you your salary will be $34,960. What percent raise (change) did you receive? Round your answer to the nearest tenth of a percent.
Answer:
2.9%
Step-by-step explanation:
When 334 college students are randomly selected and surveyed, it is found that 103 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.
Answer:
(.24329, .3734)
Step-by-step explanation:
1-propzint
n=334
x=103
c level .99
Monica drinks 0.125 liters of milk during breakfast and 0.20 liters of milk after dinner everyday. Find the total amount of milk she drinks in a day, using significant digits.
A. 0.325 L
B. 0.33 L
C. 1 L
D. 3.25 L
The total number of milk drank in a day since the significant figure is not specified is 0.325 L.
What are significant figures?Significant figures are a way of approximation of large numbers to the required approximation such as two significant figures, three significant figures, or more, as the case may be.
From the given information:
Monica drinks 0.125 liters of milk during breakfast, and0.20 liters of milk after dinner every dayThe total number of milk drank in Liters in a day is:
= (0.125 + 0.20) L
= 0.325 L
Learn more about significant figures here:
https://brainly.com/question/24491627
#SPJ1
Answer:
the correct answer is B. 0.33 L
Explanation:
I just took this quiz and this was the correct answer.
Corey buys chicken wings at a rate of $10 for 40 wings. He sells 10 wings for $5.
How much does Corey pay for each chicken wing he purchases?
Answer:
20
Step-by-step explanation:
help ples me i hate ixl
Answer:
200
Step-by-step explanation:
Base of the prism is a square
So
[tex]\\ \tt {:}\longrightarrow Area\:of\:base=(side)^2[/tex]
[tex]\\ \tt {:}\longrightarrow (5)^2[/tex]
[tex]\\ \tt {:}\longrightarrow 25cm^2[/tex]
Now
[tex]\\ \tt {:}\longrightarrow Volume=Area\:of\:Base\times Height[/tex]
[tex]\\ \tt {:}\longrightarrow 25\times 8[/tex]
[tex]\\ \tt {:}\longrightarrow 200cm^3[/tex]
PLS HELP!!
PLSSSSSSSSSSSSSSS!!!!!
Answer:
1. x = 15
2. x = 26
Step-by-step explanation:
Pythagorean Theorem:
a² + b² = c²
Hey guy good morning How are you today can you please help me with my number seven question please I will mark you brainly ?
Answer:
b. 41.43gallons
Step-by-step explanation:
no of gallon = distance/rate(fuel economy)
=1243/30
=41.4333333333gallons
:)
Given that the volume of a rectangular prism is given by the formula V = lwh, what is the value of V if I = 7 cm, w = 5
cm, and h = 4 cm?
A)
16 cm
B)
48 cm
C)
70 cm
D)
140 cm
A chemist is using 358 milliliters of a solution of acid and water. If 13.5% of the solution is acid, how many milliliters of acid are there
Round your answer to the nearest tenth.
Answer:
48 milliliters
Step-by-step explanation:
13.5% of 358 is 48
Alternate exterior angles
Answer:
[tex]When \: two \: lines \: are \: crossed \: by \: another \: line \: (called \: the \: Transversal \: ): \: Alternate \: Interior \: Angles \: are \: a \: pair \: of \: angles \: on \: the \: inner \: side \: of \: each \: of \: those \\ \\ \\ \\ \\ two \: lines \: but \: on \: opposite \: sides \: of \: the \: transversal.[/tex]
hope it helps if it helps don'tforget to like and mark
i need the answer asap 20 points
In an arithmetic sequence, the first term, a_1,a
1 , is equal to 5,5, and the fifth term, a_{5},is equal to 41.41. Which number represents the common difference of the arithmetic sequence?
Answer:
10
Step-by-step explanation:
The general term of an arithmetic sequence is given by ...
an = a1 +d(n -1) . . . . where a1 is the first term and d is the common difference
__
This formula can be used to find the value of d. The first term is given as 1, and the 5th term (a5) is given as 41. The value of n for the 5th term is 5.
an = a1 +d(n -1)
41 = 1 +d(5 -1) . . . . . substitute known values
40 = 4d . . . . . . . subtract 1, simplify
10 = d . . . . . . divide by 4
The common difference of this sequence is 10.
Answer:
10
Step-by-step explanation:
Help me please help ASAP please please help me ASAP
answer:
39.9
Step-by-step explanation:
54= area of rectangle
28.26= area of the circle
divide circle area by 2
= 14.13
subtract half of circle from rectangle area
54- 14.13
= 39.9
Find the perimeter of each polygon. Assume that lines which appear to be tangent are tangent.
9514 1404 393
Answer:
34.8
Step-by-step explanation:
The only polygon in the figure is the triangle outlined in red. Its perimeter is the sum of its side lengths: 15 +6.1 +13.7 = 34.8 units.
__
The two halves of the chord are the same length.