What’s the mean, variance and standard deviation

Whats The Mean, Variance And Standard Deviation

Answers

Answer 1

Answer:

Step-by-step explanation:

binomial distritubtion

mean= n*p

.23*300= 69

variance= n*p*(1-p)

.23*300*(1-.23)=53.1

standard deviation= sqrt(variance)

sqrt(53.13)= 7.3


Related Questions

Write as a decimal: two and three-tenths = ​

Answers

Answer:

2.3 is ur answer

Step-by-step explanation:

Answer:

2.3

Step-by-step explanation:

the interweb said so

how do you do this please help

Answers

Answer: can u be more direct plz

Step-by-step explanation:

How much are US dollars worth in Japan

Answers

Answer:

A US dollar is worth almost 114.34 Yen in Japan.

Step-by-step explanation:

( Yen is the currency they use in Japan )

Answer:

1 us dollar = 114.30 Japanese Yen

100 us dollars = 11430.65 Japanese Yen

Step-by-step explanation:

hope this helps

Which arrangement shows - 27 -4.1, -52and and 3 in order from least to greatest? 3 0 - 4.1. - 27 -3, -5% 0 , 0 -53 -3.-4.1, -7 27 - - 0 -53 -23.-4.1. -3 0 -4.1. - 27. -53 -3 O - hy​

Answers

Answer:

-52 < -27 < -4.1 < 3

Step-by-step explanation: A negative number is lower than a positive number. The higher a negative number is the lower it is. For example 54 is greater than -54. I hope I helped!  Sorry if I gave incorrect information, I didn't understand your question very much. I'm just a kid too.

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at 95 miles per hour. The westbound train
travels at 85 miles per hour. How long will it take for the two trains to be 432 miles apart?
Do not do any rounding.

Answers

Answer: 2.4 hours

Explanation:

85x + 95x = 432

To solve you combine like terms. The like terms are 85x and 95x

85x + 95x = 180x

Now you have

180x = 432

Now divide by 180

432 divided by 180 is 2.4

X= 2.4

I think that’s how you do it

If an area of a circle is 65.71cm*2 what is the radius? Round the answer to 2DP.

Answers

Answer:

4.57

Step-by-step explanation:

square root of 65.71 divided by pie

Compute $\frac{3}{4}\cdot \frac{8}{9}\cdot \frac{15}{16}\cdot \frac{24}{25}\cdot \frac{35}{36}\cdot \frac{48}{49}\cdot \frac{63}{64}\cdot \frac{80}{81}\cdot \frac{99}{100}$. Express your answer in the simplest way possible.


(Suggestion: First, try computing $\frac{3}{4}\cdot \frac{8}{9},$ then $\frac{3}{4}\cdot \frac{8}{9}\cdot \frac{15}{16},$ and so on. Look for patterns.)

Answers

Answer:

[tex] \sf\frac{3}{4}\cdot \frac{8}{9}\cdot \frac{15}{16}\cdot \frac{24}{25}\cdot \frac{35}{36}\cdot \frac{48}{49}\cdot \frac{63}{64}\cdot \frac{80}{81}\cdot \frac{99}{100} \\ \implies \sf \frac{3 \times 8 \times 15 \times 24 \times 35 \times 48 \times 63 \times 80 \times 99}{4 \times 9 \times 16 \times 25 \times 49 \times 64 \times 81 \times 100} \\ \implies \sf \frac{7333035494400}{11732856791040} \ \sf \\ \implies \sf \: 0.625[/tex]

6 find the missing length

Answers

Answer:

C) 143

Step-by-step explanation:

GL/FL = NL/ML

36/39 = 132/ML

39/36 = ML/132

(39/36) x 132 = ML

143 = ML

Hope This Helps! •v•

Write an algebraic expression for three times the sum of the first two multiples of four.​

Answers

I think its 3(4+8) hope this helps

Which rule describes the pattern shown?

41, 54, 67, 80, 93, 106

Choose 1 answer:

(A) Add 13.
(B) Add 15.
(C) Multiply by 6.
(D) Multiply by 8.

Answers

Answer:

add by 13 so it would be letter A

Answer:

A

Step-by-step explanation:

70 = 19 - 3x
what does x equal?

Answers

Step-by-step explanation:

70 = 19 - 3x

- 19 + 70 = -3x

51 = -3x

-3x = -51

x = -51/3 = -17

x = -17

therefore, value of x is -17.

hope this answer helps you dear!

Answer:

[tex]\boxed{\bf x=-17}[/tex]

Step-by-step explanation:

[tex]\bf 70=19-3x[/tex]

[tex]\bf 19-3x=70[/tex]

[tex]\boxed{\bf Subtract \: 19\: from\: both\: sides:}[/tex]

[tex]\bf 19-3x-19=70-19[/tex][tex]\bf -3x=51[/tex]

[tex]\boxed{\bf Divide \: both\:sides\: by -3:}[/tex]

[tex]\bf \cfrac{-3x}{-3}=\cfrac{51}{-3}[/tex][tex]\bf x=-17[/tex]

A local charity is making fruit baskets for elderly citizens in the neighborhood. Each basket will have 15 pieces of fruit. They bought 1,620 pieces of fruit total.

Answers

Answer:

They can have 108 baskets each with 15 pieces of fruit

Step-by-step explanation:

Determine if I Il m based on the information given on the diagram. If yes, state the converse that
proves the lines are parallel.

Answers

Answer:

I believe, that they are parallel because they both have 90° angles meaning that the other angle has to be 90° as well. I dont really know how to explain it but they are both in the same position and have 90° angles im not the best with these. •So im not exactly sure if this is correct though.

-They also have corresponding and congruent angles that do match up, so yes they are parallel to eachother

Find the inverse function in slope-intercept form (mx+b):

f(x)=2x-8

Answers

Answer:

[tex]\sf f^{-1}(x) = \dfrac{x}{2}+4[/tex]

Step-by-step explanation:

A function is given to us and we need to find the inverse of the function in slope intercept form . The given function is ,

[tex]\sf\implies f(x) = 2x - 8 [/tex]

Let us assume that y = f(x) , so that ,

[tex]\sf\implies y = 2x - 8 [/tex]

Now interchange the positions of x and y , we have ,

[tex]\sf \implies x = 2y - 8[/tex]

Solve for y in terms of x ,

[tex]\sf \implies 2y = x + 8 \\\\\sf\implies y =\dfrac{x}{2}+4 [/tex]

This is the inverse of the function in slope intercept form. Now we can replace this y with f-¹(x) , as ,

[tex]\sf \implies \boxed{\pink{\frak{f^{-1}(x) = \dfrac{x}{2}+4}}}[/tex]

Find x and y please!! I’m desperate!!!

Answers

Answer:

x = 4

y = 2

Step-by-step explanation:

the third angle of the triangle

180 - (148 + 18) = 14º

Therefor

3x + y = 14

5x - y = 18

Add the equations

8x = 32

Divide both sides by 8

x = 4

Plug in x = 4

3(4) + y = 14

12 + y = 14

y = 2

9514 1404 393

Answer:

  (x, y) = (4, 2)

Step-by-step explanation:

The triangles are similar by AA similarity, so the corresponding angles are congruent.

  5x -y = 18 . . . . . . unmarked angles are congruent

  18 +(3x+y) +148 = 180 . . . . . sum of angles in a triangle is 180°

__

After subtracting 166 from both sides, the second equation simplifies to ...

  3x +y = 14

Adding this to the first equation gives ...

  8x = 32

  x = 4 . . . . . . divide by 8

Then substituting for x in the first equation gives ...

  5(4) -y = 18

  20 -18 = y = 2

The values of the variables are x = 4, y = 2.

_____

The angle marked with a double mark is 14°, given by the simplified second equation.

how would I solve this??

Answers

Answer:

y = 140

Step-by-step explanation:

you'd do:

y=25(7)-35

y=175-35

y=140

to double-check your math:

140 = 25(7)-35

both sides will equal 140 (or the same value) if done properly

Ben said: For every $60 the sixth graders plan to raise, the seventh graders
plan to raise $90. He looks at the principal's thermometers and sees that
$60 is at the same place on the sixth-grade thermometer as $90 is on
the seventh-grade thermometer.
Ben also makes the claim: For every $30 the sixth graders plan to raise,
the seventh graders plan to raise $45.
Do you agree with this claim? Explain your reasoning.​

Answers

Answer:

yes

Step-by-step explanation:

for every 60 is 90 right so if you take 30 ( half of 60) how much are the 7th graders gonna raise half of 90 is 45 (may I please have brainliest I need it to rank up)

3 x 100 + 5 x 10 +6⋅1 + 8 x .1 + 2 x .01



100 points AND crown to right answer

Answers

your answer is 357.1

help me!!! 20 points

Answers

It’s not 20 points

Answer:

k is 3 or 15/2

Step-by-step explanation:

because it have two equation

brainlist please



Which angle is not necessarily congruent to 1?

Answers

Answer:

12

Step-by-step explanation:

the answer is just 12.

Please answer this it’s very hard for me

Answers

Answer:

C, D, E, F

Step-by-step explanation:

Remember y=mxb?

m is slope and b is y-intercept

so y=2/7x-9

Remember that slope is RISE/RUN so for every 2 squares that you go up, you go 7 squares to the right.

Also remember that since your graph is going thru your Cartiesian Plane in quadrent 4, your y value in your ordered pairs will most probably be a negative.

Please see the image to help you viualize this.

there are 20 girls in the school choir. 15% of them wear glasses. how many girls in the choir wear glasses?

Answers

Answer:

3 wear glasses

Step-by-step explanation:

10%=2

5%=1

15%=3

PLEASE HELP , WILL GIVE A BRAINLY. What is the domain of the function?

Answers

Answer: I believe it is a. Sorry if I am incorrect

Step-by-step explanation:

Functions assign outputs to inputs. The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0.

helppppppppppppppppppppp

Answers

Answer:

[tex] \frac{ {x}^{2} + - 4x - 2 }{ {x}^{2} - 4 } + \frac{8x + 6}{{x}^{2} - 4} \\ = \frac{ {x}^{2} + - 4x + 8x - 2 + 6 }{ {x}^{2} - 4 } \\ = \frac{ {x}^{2} + 4x + 4 }{ {x}^{2} - 4 } \\ = \frac{ {(x + 2)}^{2} }{(x - 2)(x + 2)} \\ = \frac{x + 2}{x - 2} [/tex]

When adding the numbers 4+9+7+6+3 you can make one group of 10.True or False

Answers

Answer:

false

Step-by-step explanation:

Here's a question ~

p1 and p2 are points on either of the two lines

[tex]y - \sqrt{3} |x| = 2[/tex]

at a distance of 5 units from their point of point of intersection. Find the coordinates of the foot of perpendiculars drawn from p1 , p2 on the bisector of the Angle between the given lines.​

Answers

Answer:

(0, 5√3/2 + 2)

Step-by-step explanation:

Given is the absolute value function.

Observations:

It has a slope of ±√3 and the y- intercept of 2.There is no horizontal shift, so the the y-axis is the line of symmetry.The y-axis is also an angle bisector of the two lines.The foot P₁P₂ is parallel to the x-axis since it's perpendicular to the y- axis.

We need to find the coordinates of intersection of the line P₁P₂ with the y- axis (the point Y in the picture).

Consider the triangle AYP₂.

We know AP₂ = 5.

The angle YAP₂ is:

arctan (1/√3) = 30°

The distance AY is:

AY = AP₂ cos 30° = 5*√3/2

The distance from the x-axis to the point Y is:

5√3/2 + 2, added the y- intercept of the graphed lines

The coordinates of the point Y:

(0, 5√3/2 + 2)

what is the answer to∠X≅∠X

Answers

Answer: ∠A ≅ ∠A; reflexive property

Step-by-step explanation: found it online :)

How much is 9396 divided by 18? Use partial quotients to answer.

Answers

Answer:

9396/18 is 522

I need help asap pls I am begging!!!!!

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Answer:

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I would type the answer but it won’t fit and it will take long. So I’m gonna tell you what to use to get the answer. Get photo math the app to solve 1 and 4. It will show you the steps on how to do it and where to long the graph. You can also use desmos on a computer. Trust me those apps helped me out a lot. Hope I helped. Mark brainliest pls

Brad's science class is heading to Skylight Observatory on a field trip. The observatory offers
a group rate for students that is $4 less per person than the normal cost. There are 27
students in Brad's science class. His teacher called ahead and found that the total cost for the
class will be $378. What is the normal cost per person?

Answers

Answer:

$18

Step-by-step explanation:

378 ÷ 27 = 14

14 + 4 = 18

The normal cost per person = $18

The normal cost per person is $18.

Given,

Brad's science class is heading to Skylight Observatory on a field trip.

The observatory offers a group rate for students that is $4 less per person than the normal cost.

There are 27 students in Brad's science class.

The total cost for the class is $378.

We need to find the normal cost per person.

How do we equally find the cost of each item from the total cost?

We divide the total cost by the number of items.

Example:

7 bags cost $49

1 bag cost = $49 / 7 = $7

We have,

The number of students = 27

The total cost of the class trip with the offer =  $378

Offer = $4 less than the normal cost per student

Now,

The offer cost for each person:

= $378 / 27

= $14

The normal cost for each person:

= $14 + $4

= $18

Thus the normal cost per person is $18.

Learn more about finding the normal cost for an individual here:

https://brainly.com/question/25058626

#SPJ2

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