Assume that random guesses are made for six multiple choice questions on an SAT​ test, so that there are nequals6 ​trials, each with probability of success​ (correct) given by pequals0.2. Find the indicated probability for the number of correct answers. Find the probability that the number x of correct answers is fewer than 4.

Answers

Answer 1

Answer:

0.2 +-4

Step-by-step explanation:

Answer 2

The required probability is 0.8826 that the number x of correct answers is fewer than 4.

What is probability?

Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.

There are n equals 6 ​trials, each with a probability of success​ (correct) given by p equals 0.2.

This is a direct application of Binomial distribution with sample size (n) = 6 and P(success) = p = 0.35

Let X be a Binomial random variable.

X ~ Binomial (n = 6, p = 0.35)

We have to determine, P(X < 4)

Using Excel we discover this probability,

⇒ P(X < 4) = P(X ≤ 3) = BINOMDIST (3, 6, 0.35, 1) = 0.8826

⇒ P(X < 4) = 0.8826

Therefore, the required probability is 0.8826

Learn more about probability here:

brainly.com/question/11234923

#SPJ5


Related Questions

Jill and Erika made 5 gallons of lemonade for their lemonade stand.

Part1: How many quarts did they make?

Part2: If they charge $2.00 per quart, how much money will they make if they sell it all?

Answers

Part 1: 4 quarts in a gallon
4 * 5 = 20 quarts

Part 2: 20 * 2 = 40
They will make $40.00

solve for the missing value (?) 3:9=? ?:81=

Answers

Answer:

27

Step-by-step explanation:

First you need to figure out what times 9 = 81

9 x 9 =81

since you have to do the same thing on both sides of the equation you do

3 x 9

which gets you 27

Please Explain and show answer

Answers

Looking at the graph. When x = 1, y = 15.

Meaning that each hours, the gallon of water will be filled in 15 gallons.

So in 10 hours, that'd be

10 × 15 = 150 gallons of water.

Therefore, the answer is 150 gallons of water.

PLEASE HELP!!! will mark brainliest

Answers

Answer:

you actually got all the answers

Step-by-step explanation:

Answer:

the ones you chose are correct :-)

6-3
Pleass helpppppp

Answers

Answer:

3

Step-by-step explanation:

-3 is 3

HELP FASTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT

Answers

Answer:

Step-by-step explanation:

 U bot. Nub

which expression is not equivelent to 2/3 x 4 ​

Answers

Answer:

8/3

Step-by-step explanation:

[tex]\frac{2}{3} \times 4\\\\\mathrm{Apply\:the\:fraction\:rule}:\\\quad \frac{a}{b}\times c=\frac{a\times c}{b}\\\\\frac{2}{3}\times \:4=\frac{2\times \:4}{3}\\\\\mathrm{Multiply\:the\:numbers:}\:\\2\times \:4=8\\\\=\frac{8}{3}[/tex]

work out the size of angle x​

Answers

I know this is off topic but I hope u have a good day

-2(x+4)²= -200

can you guys please help

Answers

Answer: x= 6 or - 14

hey im dum dum what's 45*23455/76?

Answers

Answer:

13887.8289474

Step-by-step explanation:

i used a calculator cuz im dum too lol

Answer:

45*23455/76 = 133887.82894736

Solve P-6 = 16. Check your answer.
O p = 22
O p = -22
O p = 10
O p = -10

Answers

The answer is P=22
P-6=16
we can add 6 to both sides to cancel out the -6 and get p by itself.
p=16+6
now we add them
p=22

Is this a function?

Answers

Answer:

no

Step-by-step explanation:

Answer:

Step-by-step explanation:

 

In my opinion I would say No but I could be wrong

Multiply. Write the answer in simplest form.
2 1/6 x 3 1/2

Answers

Answer:

The answer is 91/12 in simplest form.

helpppppp pleaseeee


question: Why do we need to know the mass of a robot? *
why is this in math why does my teacher does this

Answers

Answer:

To know what the answer is

Step-by-step explanation:

clearly I do not know, but I can say that we do need to know the mass bc in the future there will be more and more androids on the rising making human interaction bad.

to find out the equation take the seed and the time. (this to make it look like i answered) Taking the mass you will be able to find out how manyspeed is found by the time and masstime is found out by the mass and speedi dont know if this helped

Answer:

Step-by-step explanation:

Help me please I’m confused

Answers

Answer:

Its c

Step-by-step explanation:

Morgan's way to solve the equation |2x-7| =5 is first to write |x-3.5|=2.5. explain this approach, and then finish the job.

Answers

Answer:

Morgan divided 2 throughout the original equation, giving her |x-3.5|=2.5.

x = 6 and x = 1

Step-by-step explanation:

|2x-7|=5 -- divide by 2

|x-3.5|=2.5 and |x-3.5|=-2.5 -- since this is an absolute value equation, we have to consider both positive and negative

x-3.5 = 2.5

x = 6

x-3.5 = -2.5

x = 1

2. A spider can walk at a certain speed and run at
another speed. If she walks for 10 seconds and runs for 9
seconds, she travels 85m. If she walks for 30 seconds and
runs for 2 seconds, she travels 130m. Find her speeds of
walking and running.

Answers

Answer:

The answer is below

Step-by-step explanation:

Speed is the ratio of distance covered to the time taken. Speed is given by the formula:

speed = distance / time.

Let us assume the spider walking speed is x and its running speed is y.

If the spider walks for 10 seconds and runs for 9  seconds, she travels 85m. distance = speed * time, hence:

Total distance = distance covered walking + distance covered running

10x + 9y = 85     (1)

Also if she walks for 30 seconds and  runs for 2 seconds, she travels 130m. Hence:

30x + 2y = 130   (2)

Solving equation 1 and 2 simultaneously by mutiplying equation 1 by 3 and subtracting equation 2 from the result:

25y = 125

y =5 m/s

Put  y = 5 in eqn. 2

30x + 2(5) = 130

30x = 120

x = 4 m/s

The spider walks at 4 m/s and runs at 5 m/s

How many solutions does the equation
10x – 9x + 1 = 1 + 5 - 4 have?

Answers

Answer:

One Solution: x = 1

Step-by-step explanation:

Step 1:

10x - 9x + 1 = 1 + 5 - 4       Equation

Step 2:

x + 1 = 2          Combine Like Terms

Step 3:

x = 2 - 1        Subtract 1 on both sides

Answer:

x = 1

Hope This Helps :)

Which of the following expressions shows the area, in square inches, of the circle?
(TT = 3.14)
O 3.3.14 - 22
O 3.14.32
03.14 22
03.14.3

Answers

Answer:

Step-by-step explanation:

the area of the circle A= 3.14*r^2

diameter is 6, radius is 6/2=3

it is choice 2

A=3.14*3^2

sin θ = 12/37. Find tan θ.

Answers

Answer:

B

Step-by-step explanation:

Use SOHCAHTOA.

sinθ = [tex]\frac{opposite}{hypotenuse}[/tex]

Opposite side length= 12

Hypotenuse length = 37

Find the adjacent side length (b) using the Pythagorean theorem.

[tex]12^2 + b^2 = 37^2[/tex]

b = 35

tanθ = [tex]\frac{opposite}{adjacent}[/tex] = 12/35

Choice B is the correct answer.

Answer:

Step-by-step explanation:

using sin inverse rule to get  theta

[tex]sin^{-1} (\frac{12}{37} ) =18.9246[/tex]  <---- theta

so tan(18.9246) =12 /35

What course level took the longest to complete? University course and costs

Answers

............ . . . m m. .

Each of four test scores in Connie’s class is to be weighted equally. On the first three tests, Connie scored 80%, 90% and 95%. What percent must she score on her fourth test to have an overall average of exactly 90%?

Answers

Answer:

95%is the answer

Step-by-step explanation:

Answer:

95%

Step-by-step explanation:

We can use the balancing method to do this.. first what is the total below 90?

The total is 10% because 90-80 which was the only percentage below 90 is 10%. Then, what is the total above 90?

The total is 5% because the only percentage above 90 is 95 and 95-90 is 5%

Now we use the balancing method to get from 5-10.

Using the balancing method we get 95%

66 and 2/3% as a fraction and decimal

Answers

Answer:

Answer are right here

Step-by-step explanation:

66 as a fraction is 33/50 and as a decimal, it would be 0.66

2/3 as a fraction would be 2/3 and as decimal it would be 0.66666667

What is Square root of 296 to the nearest tenth?

Answers

Answer:

16.4

Step-by-step explanation:

√269= 16.40121946...

simplifies to 16.4 I believe

Answer: 17.2

Step by step explanation: Here are step-by-step instructions for how to get the square root of 296 to the nearest tenth:

Step 1: Calculate

We calculate the square root of 296 to be:

√296 = 17.20465053408530

Step 2: Reduce

Reduce the tail of the answer above to two numbers after the decimal point:

17.20

Step 3: Round 17.20 so you only have one digit after the decimal point to get the answer:

17.2

what is the solution for x in the question? -4 +5x-7 =10+3x-2x
x =4/13
x =4/21
x =21/4
x =13/4

Answers

Answer:

x= 21/4

Step-by-step explanation:

have a good day

1) 16% of what number is 14?
2) 52 is what percent of 156

Answers

Answer: first one answer is 2.24

second one answer is 81.12

Find the value of this expression if x = 7 and y= -2
xy^2/9

Answers

7(−2)^2 /9

7(−2)^2 /9  

= 28 /9

the answer above this is wrong if you’re using Plato

Joshua rents an apartment in an all-brick building in the city. The value of the
belongings in the apartment is about $25,000. If Joshua wants to insure his
belongings while renting, how much will he have to pay for insurance per
year?
Annual Premium per $100 of coverage
Brick
Steel
Mixed
Wood
Area
Building Contents Building Contents Building Contents Building Contents
rating
10.39 0.43 0.5
0.54
0.55 0.65 0.66 0.76
Suburb | 0.45 0.52 0.56 0.63 0.72 0.74 0.83 0.85
Rural 0.6 0.69 0.71 0.8 0.89 0.91 1
1.02
City
A. $107.50
B. $150.00
C. $173.50
D. S178.65

Answers

Answer:

107.5

Step-by-step explanation:AOPED

In order from less complex to more complex, which level of organization is directly after tissue?

Answers

organs is after tissue

Find the value of the variable that results in congruent triangles
1.

Answers

Answer:

x = 26

Step-by-step explanation:

m<B = m<E = (x + 17)°

180 - (25 + 112) = (x + 17) (sum of ∆)

180 - 137 = x + 17

43 = x + 17

Subtract both sides by 17

43 - 17 = x

x = 26

Other Questions
Is this correct? Im too tired and confused to understand this.. 1) I don't like to do manual work.(Rewrite the sentenceusing would The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?A. simple osmosisB. active transportC. simple diffusionD. facilitated diffusion and please give a reason why you chose this answer Why do some people consider the way the media cover candidates for public office bad for democracy? A. People tend to vote for the candidates who they find most appealing, rather than the ones whose beliefs are most like their own. B. The media are for-profit businesses, unable to be fair or objective in the interest of the public. C. Candidates already in office receive more media attention than those who are trying to take their positions. D. People always vote for the person the media determine is most qualified, rather than the candidate who can bring about change.Why do some people consider the way the media cover candidates for public office bad for democracy? A. People tend to vote for the candidates who they find most appealing, rather than the ones whose beliefs are most like their own. B. The media are for-profit businesses, unable to be fair or objective in the interest of the public. C. Candidates already in office receive more media attention than those who are trying to take their positions. D. People always vote for the person the media determine is most qualified, rather than the candidate who can bring about change. Which of the following describes the threat President Harry Truman iswarning against in the passage below? What is the value of x?Enter your answer in the box. I need a descriptive paragraph about Caroni Swamp in Trinidad in 12 minutes! Dont make it too sophisticated like an adult wrote it please! Solve the inequality.n - 21 > 16 5. Why are metamorphic rocks formed by contact metamorphism usually not as dense as thoseformed by regional metamorphism? [sorry im doing this again] When does an electrically charged object attract another object? A When one object is far away from the otherB When each object is negatively chargedC When the objects are oppositely chargedD When each object is positively charged [Edited] peps took to long just guessed:{ One advantage of a long-term loan compared to a short-term loan is that a long-term loan: O A. allows a person to borrow more money at a lower interest rate. B. does not force the borrower to make payments every month. C. can be paid off in full without the borrower paying any interest. D. does not thequire the borrower to have a good credit score Describe the benefits of having a positive attitude. who do you think was primarily responsible for the Cold War - the United States or the Soviet Union? Why? 2. 11d = 121What is the algebraic equations Find the equation of the line y=___x+___ Write a congruence statement for any figures that can be proved congruent. PLEASE ANSWER, 25 POINTS!!! FOR ASL3. In this unit, you have learned some of the most common mouth morphemes in ASL Asidefrom these types of morphemes, which are an important element of ASL grammar,consider how your ASL would be impacted if you mouthed English words as you signed inASL? How could it be problematic if a person mouthed every word while signing? Giveyour opinion based also on what you have seen or learned from the Deaf community,5. Consider two different settings or situations in which two or more Deaf people may be signing to each other such as in school, walking in the park, when asking for directions in a large city, or at a social event. Briefly explain the setting and the discuss how the behavior and social interactions of a Deaf person in that situation might be unique and/ or different from that of a hearing person in the same situation. 8x + 3 (3 - x) = 34A. x = 5B. x = 2C. x = 8D. x = 4 The perspective that states that parents mold their infant's emotions and personality as they reinforce or punish their child is called _____. The following are the last 10 run scores Colin got in cricket:32, 2, 0, 25, 34, 24, 6, 23, 17, 34a) Work out Colin's mean score.b) Colin plays cricket again on Sunday. He gets 23 runs.What is his new mean score?Give your answers as decimals.