A weather forecaster has a 60% chance of predicting the weather correctly today. If she is correct, then the probability of being correct the next day is 80%. If she is wrong, the chance of predicting incorrectly the next day is increased by 25% that she was wrong the previous day. What is the probability that the forecaster will predict the weather correctly in exactly two of the next three days?

Answers

Answer 1

Answer:

According to the National Weather Service, if you see a 40 percent chance of rain, "there is a 40 percent chance that rain will occur at any given point in the area."

Step-by-step explanation:

Answer 2

The probability that the forecaster will predict the weather correctly in exactly two of the next three days is 0.48 or 48%.

What is the chain rule in probability?

For two events A and B, by chain rule, we have:

[tex]P(A \cap B) = P(B)P(A|B) = P(A)P(B|A)[/tex]

where P(A|B) is the probability of occurrence of A given that B already occurred.

A weather forecaster has a 60% chance of predicting the weather correctly today.

If she is correct, then the probability of being correct the next day is 80%.

If she is wrong, the chance of predicting incorrectly the next day is increased by 25% that she was wrong the previous day.

Let the chance of predicting the weather correctly today be A.

Let the chance of predicting the weather correctly the next day be B.

Then the probability that the forecaster will predict the weather correctly in exactly two of the next three days will be

[tex]P(A \cap B) = P(A)P(B|A) = 0.6 \times 0.8 = 0.48[/tex]

More about the chain rule of probability link is given below.

brainly.com/question/1210781


Related Questions

which expression is equivalent to 15c + 20?

Answers

Answer: (3c+4)

Step-by-step explanation:

Does anyone know this?

Answers

Answer:

I think 7.6 i remember i had something like this  

Step-by-step explanation:

Help help math please please

Answers

Answer:

x = 42

Step-by-step explanation:

2x + 8 + 2x + 4 = 180

4x + 12 = 180

4x = 168

x = 42

I don’t know but I really need answers I don’t know but I really need

Find the measure of the angle ACD in the given figure???

Answers

Answer:

∠ACD = 33.5°

Step-by-step explanation:

The arc length will be twice ∠ ABD,

∠ABD will equal ∠ACD because they subtend the same arc length.

3x + 7 = 2(2x - 6.5)

3x + 7 = 4x - 13

x = 20

∠ABD = (2(20) - 6.5) = 33.5

Prepare a mixture of 100g of 8% cream into 200g of 3% cream. What is the resulting concentration?

Answers

Answer:

14=300X

X=14/300

X=.04667 OR 4.67%

Step-by-step explanation:

100*.08+200*.03=(100+200)X

8+6=300X

14=300X

X=14/300

X=.04667 OR 4.67% SOLUTION ANS.

If this process is wrong, let me know

what is the greatest number of obtuse angles that a right triangle can contain

Answers

Step-by-step explanation:

i think this is the answer

Answer:

Zero

Step-by-step explanation:

Obtuse angle is the angle greater than 90°.

A right triangle has one 90° and the sum of remaining angles is 90°.

It means a right triangle can't have an obtuse angle.

How much would $125 invested at 8% interest compounded continuously be
worth after 16 years? Round your answer to the nearest cent.
A(t)= Poet

A. $428.24
B. $285.00
C. $449.58
D. $367.26

Answers

c$449.58

hfufhfthcuxjyfus4hxtstcyztf

help me with this i dont understand

Answers

Answer:

4

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

The scale factor is the ratio of the corresponding sides.

Take the base of both quadrilaterals.

Large quadrilateral:

6 - (-6) = 12

Small quadrilateral:

2 - (-2) = 4

Scale factor:

k = 12/4 = 3

1/7 divided by blank equals 14

Answers

Answer:

1/98

Step-by-step explanation:

Step 1: Translate statement into equation.

[tex]\frac{1}{7}/x = 14[/tex] [tex]\frac{1}{7x}=14[/tex]

Step 2: Multiply both sides by 7x.

[tex]\frac{1}{7x} * 7x = 14 * 7x[/tex] [tex]1 = 98x[/tex]

Step 3: Divide both sides by 98.

[tex]\frac{1}{98} =\frac{98x}{98}[/tex] [tex]x = \frac{1}{98}[/tex]

Step 4: Check if solution is correct.

[tex]\frac{1}{7}/\frac{1}{98}[/tex] [tex]\frac{1}{7}*98[/tex] [tex]14[/tex]

Therefore, the answer is 1/98.

An object is launched directly in the air at a speed of 8 feet per second from a platform located 4 feet above the ground. The position of the object can be modeled using the function f(t)=−16t2+8t+4, where t is the time in seconds and f(t) is the height, in feet, of the object. What is the maximum height, in feet, that the object will reach?

Answers

The maximum height is 68 ft. The easiest way to find this answer is by using the online desmos graphing calculator. It is a lifesaver

An executive has 6 skirts, 8 jackets, and 6 blouses that all coordinate. If an outfit consists of one skirt, one
jacket, and one blouse, how many different outfits does she have?

Answers

Answer: 288

Work Shown:

6*8*6 = 288

Why does this work? Consider a table that is 6 rows by 8 columns. The rows represent the number of skirts and 8 is the number of jackets. That produces 6*8 = 48 different skirt & jacket combos. We can extend this idea out to any number of items instead of just 2.

Answer:

6

Step-by-step explanation:

you keep counting until you reach the lowest number of whatever you need to make it equal

6-1-1-1-1-1-1

6-1-1-1-1-1-1

8-1-1-1-1-1-1

The ratio of 70 minutes to 2 hours is

Answers

Hey there!

70 minutes

= 1 hour 10 minutes

2 hours

= 60 minutes * 2 minutes

= 60 minutes + 60 minutes

= 120 minutes

70/120

= 70 ÷ 10 / 120 ÷ 10

= 7 / 12

Therefore, your answer is: 7:12 OR 7/12

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)



What is the slope of the line?

Answers

y = 4x - 3
Hope this helps

Please help! Thanks!: If a 95% confidence interval was being calculated using the following expression:

3.2 ± 1.96 ⋅ 1.1

What would be the margin of error for this confidence interval?
If you can please give an explanation on how to solve?

Answers

The confidence interval can be calculated from the margin of error, and vice versa,

The margin of error of the confidence interval is 2.156

The confidence interval is given as:

[tex]\mathbf{CI = 3.2 \pm 1.96 \cdot 1.1}[/tex]

The formula of confidence interval is:

[tex]\mathbf{CI = \bar x\pm E}[/tex]

Where E represents the margin of error.

So, by comparison:

[tex]\mathbf{E = 1.96 \cdot 1.1}[/tex]

Multiply

[tex]\mathbf{E = 2.156}[/tex]

Hence, the margin of error of the confidence interval is 2.156

Read more about margin of errors at:

https://brainly.com/question/13990500

If 1,600 divided by n = 4, what is the value of n?
A 40
B 400
C4,000
D40,000

Answers

Answer:

B) 400

Step-by-step explanation:

To find the value of n, you would have to divide 1600 by 4. 1600/4=400.

Answer:

400

Step-by-step explanation:

1600 4

What is the sum of 4 of the interior angles of a regular octagon?

Answers

Answer:

540°

Step-by-step explanation:

inter angle vertex = 135°

135 + 135 + 135 + 135 = 540°

(9x+3)5 i really need help with this pleaseeee

Answers

Answer:

1/15

Step-by-step explanation:

Thats my guess I think its that though.

Answer: 3

Step-by-step explanation:

PEMDAS

Plz help I need help

Answers

Answer:

a is 4 because 4 x 16=20 i hope this help

Answer :

a + 16 = 20

a = ?

a = 20 + 16

a = 36

a = 36 ✔️

A furniture company charges 0.45 per pound
for shipping

Write an equation for the cost(y) of shipping
x pounds.

Use it to determine the cost of shipping a
12-pound chair.

Answers

The cost of the shipping a 12 pound chair is 5.4 all you need to do is 0.45 x 12 =5.4

0.45=Y 5.3=X

I RELLY NEED HELP RIGHT NOW

Answers

Answer: 28

Step-by-step explanation:

henry is designing a tablecloth for his dining room table. He wants to buy fabric in his favorite color to make the tablecloth. use the dimensions below to determine how much fabric he need to buy. 12 feet 7 feet

Answers

This question is basically asking for the area of the tablecloth. Remember that A = l • w.

12 • 7 = 84

So, Henry will need to buy 84 ft^2 of fabric.

15. Jessica is trying to hire a babysitter that charges less than $10 per hour (not including any extra fees).
Which babysitters would charge less than $10 per hour? Select all that apply.
A. Mia charges $34 for 3 hours. This includes a $10 commute fee.
B. Alex charges $66 for 6 hours. This includes a $12 commute fee.
C. Sam charges $92 for 7 hours. This includes a $8 commute fee.
D. Tony charges $52.5 for 3.5 hours. This includes a $0 commute fee.
E. Rene charges $112 for 5.5 hours. This includes a $2 commute fee.

Answers

Answer:

A. and B.

Step-by-step explanation:

A. $34 - $10= $24 hourly fee divided by 3= $8 per hour.

B. $66 - $12= $54 hourly fee divided by 6= $9 per hour.

C.$92-$8= $84 hourly fee divided by 7= $12 per hour.

D. $52.5-$0= $52.5 hourly fee divided by 3.5= $15 per hour.

E. $112-$2=$110 hourly fee divided by 5.5= $20 per hour.

So Mia and Alex are the cheapest .

Whitney and Destiny hung out at the mall on Saturday. They spent 45 minutes shopping for clothes and 1 hour at the food court. Then they spent 30 minutes at the video arcade before heading home. It was 12:45 P.M. when Whitney and Destiny left the mall. What time did they start shopping for clothes?

Answers

Answer:

11.15 i think

Step-by-step explanation:

Answer the following questions.
(a) What percent of 80 is 44?
(b) What number is 45% of 40?

Answers

Answer:

a. 55%

b. 22

Step-by-step explanation:

Answer:

[tex]a)55[/tex]

b) 18

Step-by-step explanation:

→ Set up an for part a

[tex]\frac{80x}{100} =44[/tex]

→ Multiply both sides by 100

[tex]80x=4400[/tex]

→ Divide both sides by 80

[tex]x = 55[/tex]

→ Multiply both numbers together for part b

45 × 40 = 1800

→ Divide the answer by 100

1800 ÷ 100 = 18

Among all the pairs of numbers whose difference is 18 18 , find the pair with the smallest product. What is the product?

Answers

Answer:2-b= 18-a+b now their product is F=a.b-f(b)=18+b)b Dt/db =18+2b-0=18+2b-0=9+b-9=b

so, that's our only critical point, run a first-derivative test on it, and you'll notice is a minimum

Step-by-step explanation:

Tony bought a skateboard online. It cost $96 plus 20% shipping and handling. What was the total cost?​

Answers

The answers would be 480

License plates in the great state of Utah consist of 2 letters and 4 digits. Both digits and letters can repeat and the order in which the digits and letters matter. Thus, AA1111 and A1A111 are different plates. How many possible plates are there?

Answers

Answer:

Step-by-step explanation:

The correct option is 3. Step-by-step explanation: It is given that License plates in the great state of Utah consist of 2 letters

NO LINKS!!

y = |x + 4| - 1

Approximate when the function is positive, negative, increasing or decreasing.

Describe the end behavior of the function.

Function is positive:

Negative:

Increasing:

Decreasing:​

Answers

Step-by-step explanation:

Given function:

y = |x + 4| - 1

See the graph below

According to the graph we see that

The minimum is (-4, -1) and zero's are (-5, 0) and (-3, 0)

Function is positive:

When x < - 5 and x > -3

Negative:

When x is between -5 and -3

Increasing:

When x > -4

Decreasing:​

When x < -4

I don't know the answer to this & I don't understand how to get it.

Answers

Answer:

i thank it h

Step-by-step explanation:

Answer:

Well your answer is (F)

Step-by-step explanation:

?

Ty'Sean went to the bowling alley and spent $14.50. If his rental shoes costs $4.50 and he played 5 games, what was the price per game?

Answers

Answer:

first off theres two ways of doing it the equation is more fun though

14.5 = x + 4.5

14.5 = x(5) -4.5

-4.5

10 = 5x

divide by 5

you get

2x or $2

other way was to just -4.5 and divide by 5 but thats no fun

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