According to the guideline from the Health Department, every over-weight child needs to take a fitness test.
Every ten over-weight children would be randomly grouped together to attend the fitness test. According to
the past experience, the probability for each child to pass the fitness test is 0.75 and whether a child can pass
the test is independent with the test result of other children.
(a) Many test sessions will be conducted regularly, each with 10 independent children. Find the expectation
and standard deviation of the number of children can pass the fitness test in a test session.
(b) Most likely, how many children can pass the fitness test in a test session? Justify your answer by
comparing the two outcomes with the relatively high probability.
(c) Find the probability that less than 8 children can pass the fitness test in one test session.

Answers

Answer 1

Answer:

According to the guideline from the Health Department, every over-weight child needs to take a fitness test.

Every ten over-weight children would be randomly grouped together to attend the fitness test. According to

the past experience

Step-by-step explanation:


Related Questions

The height of one cylinder is 8 cm, and the radius of its base is 5 cm. The height of a second cylinder is 24 cm, and the radius of its base is 5 cm. How many times the volume of the first cylinder is the volume of the second cylinder?

Answers

Answer:

Step-by-step explanation:

volume₁ = π5²·8 = 200π cm³

volume₂ = π5²·24 = 600π cm³

volume₂ = 3×volume₁

Answer:

It is 3, hopefully you got a good score! :D

Step-by-step explanation:

A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.)2x^3 − 5x^2 − 28x + 15 = 0; {1/2}

Answers

Answer:

2x^3 − 5x^2

Step-by-step explanation:

These are numbers that cannot be written as fractions, numbers with decimals that do not end or repeat. Example: π, 2.345643.....,

Answers

Answer:

These types of numbers are commonly referred to as "irrational numbers".

Step-by-step explanation:

4/7 of 29= (estimate each product)

Answers

Answer:

16.6 for nearest tenths

16.57 for nearest hundreths

Step-by-step explanation:

4/7*29/1=

29*7=203/7 to get the same denominator

203 x  4  = 812    mulptiply to get the fraction

 7    x   7 =  49

812/49=16.5714285714

What is the inequality that would represent: The sum of two numbers is
less than 4?*

Answers

Answer:

x+y<4

Step-by-step explanation:

Answer:

x+y<4

Step-by-step explanation:

let the numbers be x and y

x+y<4

x-y>1

does anyone know how to solve this? ​ I have to find lengths FJ, DM, and EM

Answers

Answer:

FJ= 24

DM= 16

EM= 18

Step-by-step explanation:

The centroid is twice as close along any median to the side that the median intersects as it is to the vertex it emanates from.

So in the case of FJ, the median intersects the side at point J and extends from vertex F. This means that FM is twice as long as MJ. It tells us that MJ is 8, so MF would be 16. Now because FJ is just FM+MJ, FJ is 24.

It also tells us that DK is 24, which means that DM+MK = 24. If DM is twice as long as MK, that would make MK equal to 8 and DM equal to 16

Similarily, EM would be twice as long as ML. It says that ML=9 so that would make EM=18

Can someone help me please??

Answers

add all the sides together
10+15+7+8+8+2=50 ft

Answer:

the perimeter is just the distance around the shape so 7+10+15+8+8+2=50

If the triangle below is enlarged by a scale factor of 1.2, what will be the area of the new triangle?

Answers

Answer:

Step-by-step explanation:

A=bh/2

A=(1.2b)(1.2h)/2

A=1.44(bh)/2

A=0.72bh

b=10cm and h=5c

A=0.72(10)(5)

A=36 cm^2

Answer:

36cm sqaured

Step-by-step explanation:

Step-by-step explanation:

A=bh/2

A=(1.2b)(1.2h)/2

A=1.44(bh)/2

A=0.72bh

b=10cm and h=5c

A=0.72(10)(5)

A=36 cm^2

True or false?is the point(16,4) included in this function: Y=2x or Y=x2 or y= x+12 or y=x-12

Answers

Answer:

True

Step-by-step explanation:

It is true because the graph of [tex]y=x-12[/tex] passes through the point [tex](16,4)[/tex]

x = 16

y = 4

Substitute

4 = 16 - 12

4 = 4

Therefore, the answer is true.

What is the nth term rule of the linear sequence below?
13, 7, 1, -5, -11,...​

Answers

Sry I don’t know try Socratic

What is the perimeter and area of the composite figure?

Answers

Step-by-step explanation:

▪AB = AC - EF

= 13 cm - 7 cm

= 6 cm

▪BD = CF - DE

= 16 - 8 cm

= 8 cm

BC = EF

perimeter = CF + EF + DE + AD + AB + BC

= 16 + 7 + 8 + 10 + 6 + 7

= 54 cm

Area of triangles = 1/2 × AB × BD

= 1/2 × 6 × 8

= 48/2

= 24 cm²

Area of rectangle = CF × EF

= 16 × 7

= 112 cm²

the total area = 24 + 112

= 136 cm²

#CMIIW

need help geometry question central angles and arcs !!! PLS HELP

Answers

Answer:

150°

Step-by-step explanation:

35 + 120 + 55 = 210

360 - 210 = 150

Yana needs at least $31.50 for art supplies. He earns $3.50 per day as a dog walker. Which graph represents the number of days Yana must work to earn enough money to buy the art supplies? A. 84456 B. 84455 C. 84454 D. 84453

Answers

Answer:

9 days

Step-by-step explanation:

31.50÷3.50 is 9 and 9×3.50 is 31.50

find the value of the expression below for x = 10
x'2 - 2(x+5)

A:10
B:70
C:85
D:90

Answers

The first one A.10



I hope is correct.

Henry earned $558.40 for working 32 hours. What is Henry's hourly
wage? Round to the nearest cent.

Answers

Answer:

18.64 is the answer

Please help! I will give brainliest! Needed ASAP

Answers

Answer:

3. No

4. Yes

5. Yes

Step-by-step explanation:

Ez and good luck

Answer:

3. no

4. yes equation: [tex]y=x+4[/tex]

5. yes equation: [tex]y=-2x+3[/tex]

Step-by-step explanation:

3. you can get it to that y=mx+b because it has x to the power 2

4. you just need to reverse the equation instead of the RHS of the equation 4+x it will be x+4

5. the same as question number 4

Which statement describes the solution to this system of equations?
2x – 4y = 8
8x - 16y = 32
А
There is exactly one solution, (2,4)
B
There is exactly one solution, (8,32)
ОООО
с
There is no solution to the system of equations
D
There is an infinite number of solutions to the system of equations.

Answers

9514 1404 393

Answer:

  D  There is an infinite number of solutions to the system of equations

Step-by-step explanation:

When you put the first equation in standard form by dividing it by 2, you get ...

  x -2y = 4

When you put the second equation in standard form by dividing it by 8, you get ...

  x -2y = 4

These are the same equation, so describe the same line. There are an infinite number of (x, y) pairs that will satisfy this equation.

There is an infinite number of solutions.

Sarah took clothes to the cleaners three times last month.​ First, she brought 2 shirts and 1 of slacks and paid ​$9.97. Then she brought 5 ​shirts, 3 pairs of​ slacks, and 1 sports coat and paid ​$34.91. ​Finally, she brought 3 shirts and 2 sports coats and paid ​$22.45.

How much was she charged for each​ shirt, each pair of​ slacks, and each sports​ coat?

Answers

Answer:

Each Shirt costs: $1.49

Each Slack costs: $4.49

Each Sport coat costs: $7.99

Lauren wants to gift wrap a box which is in the shape of a cube. The dimensions of the cube is 25 cm. Determine the surface area of the box to knov
how much wrapping paper should be purchased.

Answers

Answer:

3,750cm²

Step-by-step explanation:

Total surface area of a cube is expressed as;

A = 6L²

L is the side length of the cube;

Given

L = 25cm

TSA = 6 (25)²

TSA = 6 * 625

TSA = 3,750cm²

Hence the total surface area of the box is 3,750cm²

I need help with these QUESTIONS ANYONE ?????!!!!!

Answers

I think it’s the Second one

Is 12+5(2+y) and 5y+22 equivalent

Answers

Answer:

22 + 5y

Step-by-step explanation:

Yes they are

5 x 2 = 10 + 5 x y = 5y, 10 + 12 = 22, therefore you get 22 + 5y.

Which expression is equivalent to (3^2)^-2
?

Answers

Answer:

I think the answer is 2\9

Step-by-step explanation:

if we subtract the smallest two digit number from the largest two digit number we get​

Answers

Answer:

Largest two digit number - smallest two digit number

99-10

89

pls Mark as brainliest

10 Mrs. Randall bought tickets to the art museum for all the fifth-grade students. Each ticket cost $12, and the total cost of the tickets was $1,152. How many fifth-grade students are there?​

Answers

Answer:

Step-by-step explanation:

12s=1152 (divide each side by 12 to isolate s)

s=96

So there were 96 students.

Solve for x using cross multiplication 3x - 3 5 = 2x – 2 4 x = [?]​

Answers

Answer:

x = -35/22, or 1.5909090...

Step-by-step explanation:

Solving for x will be easy enough, but cross multiplication won't be necessary as that's only applicable when division is involved:

35 = 2x - 24x

35 = -22x

x = -35/22, or 1.5909090...

Mr. Anderson made the following box-and-whisker graph of the quiz grades in his chemistry class.


What is the median quiz grade for the class?

Answer Choices

A. 86
B. 70
C. 96
D. 77

Answers

Answer:

77

Step-by-step explanation:

I did the question and I got it correct.

what is the answer to y+5<9

Answers

Answer:

I think the answer would be y<4

pleeeaassee First person get brainliest!!!!

Answers

Answer:

D. 32 inches 65-33=32 so its 32 inches

Step-by-step explanation:

calculate the volume of a liquid with a density of 5.45g/km and a mass of 65g ​

Answers

Answer:

11.93 ml

rounded to two significant figures: 12ml

Step-by-step explanation:

65/5.45=11.93 ml

Please mark me as brainliest

I had to raise the number to49 pls help

Answers

Ummm what is there to answer it’s black
i’m not sure what you meant because the photo is black, but if you mean like rounded it would round to 50? is that what you meant?
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