A band director is trying to decide what music to play for the halftime show. She surveys the marching band
students to get their opinions about which music they would prefer. Which of the following sampling techniques
would provide a stratified random sample that would accurately represent the students' opinions?
Have a computer randomly sort the band members, then select the first 30.
O Randomly select 2 students from each type of instrument (trumpet, saxophone, clarinet, etc.).
O Randomly pick a letter of the alphabet and survey every student whose last name begins with that letter.
Randomly pick a year of students (freshman, sophomore, junior, or senior) and survey every student from the
selected group
Mark this and retum
Save and Exit
Nex
Submit

Answers

Answer 1

Answer:

B

Step-by-step explanation:


Related Questions

what is 100 times the value 15 thousandths

Answers

Answer:

Step-by-step explanation:

[tex]\frac{15}{1000} \times 100=1.5[/tex]

You deposit $2700 in an account that pays 3% annual interest compounded weekly. How much money is in the account after 5 years?

Answers

Answer:

A = $3136.86

Step-by-step explanation:

Given the following data;

Principal = $2700

Interest rate = 3% = 3/100 = 0.03

Number of times = 52

Time = 5 years

To find the future value, we would use the compound interest formula;

[tex] A = P(1 + \frac{r}{n})^{nt}[/tex]

Where;

A is the future value.

P is the principal or starting amount.

r is annual interest rate.

n is the number of times the interest is compounded in a year.

t is the number of years for the compound interest.

Substituting into the equation, we have;

[tex] A = 2700(1 + \frac{0.03}{52})^{52*5}[/tex]

[tex] A = 2700(1 + 0.0005769)^{260}[/tex]

[tex] A = 2700(1.0005769)^{260}[/tex]

[tex] A = 2700(1.1618)[/tex]

A = $3136.86

Randy wants to install a patio, which will be filled with concrete. The dimensions of the patio are 14 m long, 8 m wide, and 1 m deep. Determine the cost of the
concrete to be used while installing the patio if the concrete is available to Randy at the rate of $5 per cubic meter.
The cost of the concrete for installing the patio will be,

Answers

Answer:

Total cost of patio = $560

Step-by-step explanation:

Given:

Length of patio = 14 m

Width of patio = 8 m

Height of patio = 1 m

Cost of 1 m³ concrete = $5

Find:

Total cost of patio

Computation:

Volume of patio = l x b x h

Volume of patio = 14 x 8 x 1

Volume of patio = 112 m³

Total cost of patio = Volume of patio x $5

Total cost of patio = 112 x $5

Total cost of patio = $560

Which expressions represent the statement “three minus the product of seven and four”? Mark all that apply.
A 3 - (7 x 4)
B (7 x 4) - 3
C 3 - (4 / 7)
D 3 - (4 x 7)
E (7 x 4) - 3

Answers

The answer is A and D because as long as it is three minus you can still switch up the multiplication side

The statement three minus the product of seven and four is given by the expression 3 - (7 * 4)

What is an equation?

An equation is an expression used to show the relationship between two or more numbers and variables.

Given the statement three minus the product of seven and four, this is an expression:

3 - (7 * 4)

The statement three minus the product of seven and four is given by the expression 3 - (7 * 4)

Find out more on equation at: https://brainly.com/question/2972832

Add using Scratch Addition. 45 + 58 + 29 + 59 + 67 + 37 + 55 + 79 + 87 3​

Answers

92836393749484037403

Answer:

1302

Step-by-step explanation:

solve for p:
p + 1 < 8​

Answers

Answer:

p < 7

Step-by-step explanation:

the perimeter of a rectangle is 58m if its length is 17m find its breadth​
pls help its urgent

Answers

perimeter of rectangle=2(l+b)
58=2*17+2*b
58-34=2b
b=12 m

I would really appreciate it if someone could answer this I will give a brainlist:)

Answers

97 is your answer to the question

Answer:

x = 97

Step-by-step explanation:

a^2 + b^2 = c^2

(65^2) + (72^2) = c^2

4,225 + 5,184 = c^2

9,409 = c^2

√9,409 = 97 = c^2

97 = c

97 = x

Please help and explain the steps thank you!

Answers

Answer:

X》55

Step-by-step explanation:

hope it helps u

have a great day!!

A paint manufacturer wants to determine the average drying time of a new interior wall paint. For n = 50 test areas of equal size he obtained a sample mean drying time of ¯x = 63.3 minutes and a sample standard deviation of s = 8.4 minutes. (a) (5 points) Construct the 95% confidence interval for the true mean µ. (b) (5 points) Suppose the population has a normal distribution, construct the exactly 95% confidence interval for the true mean µ. (c) (5 points) Suppose the population has a normal distribution, construct the 95% prediction interval for a new observation.

Answers

Answer:

a) the 95% confidence interval for the true mean µ is 60.971, 65.629

The exact 95% confidence interval for the true mean µ is 60.971, 65.629

P (x`- ∝ s/√n<u <x`+ ∝ s/√n) = 0.95

Step-by-step explanation:

n= 50

x`= 63.3

s= 8.4 minutes

∝= 95%= ±1.96

The formula for calculating the confidence interval is:

x`± ∝ s/√n

Putting the values

x`± 1.96 s/√n

63.3 ± 1.96(8.4/√50)

63.3± 2.3287

60.971, 65.629

a) the 95% confidence interval for the true mean µ is 60.971, 65.629

b) Putting the values

x`± 1.96 s/√n

63.3 ± 1.96(8.4/√50)

63.3± 2.3287

The exact 95% confidence interval for the true mean µ is 60.971, 65.629

c) The prediction level tells that the drying time of the wall from 60.971 to 65.629 minutes must be in the range 95 % of the time.

And is given by

P (x`- ∝ s/√n<u <x`+ ∝ s/√n) = 0.95

simplify it the following:
X u ( X n Y )​

Answers

Answer:

X^2unY

Step-by-step explanation:

Xu(XnY)

= X^2unY

sorry if the process and answer is wrong.

I would really appreciate it if someone could answer this I will give a brainlist:)

Answers

Answer:

Hypotenuse= 97

Step-by-step explanation:

H² = B² + P²

H² = (65)² + (72)²

H² = 4225 + 5184

H²= 9409

Taking square root on both sides,

H= 97

1
-
2 x(x-2x+4
Ayuda

Answers

Answer:

Simplified - 2x(-x+4), Solution - -2x(-x+4)

Tarzan is making his mom a card for her birthday. He drew a model of the card before he created it. The model is shown below.

The front of the card is shown. If Tarzan covers the whole front side of the actual card with decorative paper, how much paper would he need? you may use exact answers or round to the nearest hundredth.

Answers

Answer:

The area of a triangle uses the equation:

A = ab/2

a = 12

b = 9

A = 12 * 9 / 2

A = 54 inches

54 / 3 = 18

He needs 18 feet of paper

Tarzan need 18 feet of paper to make his mom a birthday card

Please help me solve this step by step please :(

Answers

Answer:

B) 60.21 ft²

Step-by-step explanation:

Area of a triangle = 1/2bh

You can‘t used mixed measurements (feet and inches), so you have to convert each length to inches

8’6”=102’

14’2”=170’

Now find the area

1/2 x 102 x 170 = 8670 in²

This is one of the answers, but the quetion asks how many quart feet you need.

So, convert it back to feet.

8670 x 0.06944444444 = 60.2083333

(You could also have converted the two lengths to feet. 8’6” = 8.5 ft.  14’2” = 14.16666666.  This way would probably have been faster.

1/2 x 8.5 x 14.166666 = 60.20833333)

May someone pls help me with this question

Answers

Answer:

Step-by-step explanation:

P(BorL)=(2/8)+(1/8)=(3/8)

He is expected to wear boots or loafers in the next 264 days

264(3/8)=99 of those days

Which net can be folded to form a triangular pyramid?

Answers

The net that can be folded to form a triangular pyramid is net b

How to determine the net that can be folded

From the question, we have the following parameters that can be used in our computation:

The nets in the list of options

As a general rule, a triangular pyramid has 4 triangles such that

Three triangles are adjacent and one triangle is at the top or at the bottom

using the above as a guide, we have the following:

The net that can be folded to form a triangular pyramid is net b

Read more about triangular pyramid at

https://brainly.com/question/16205402

#SPJ1

Bart practices his trumpet 1 ¼
hour each day for 5 days. How
much did he practice altogether?

Answers

Answer:

150 hours or 6.25 days

Step-by-step explanation:

5 days = 120 hours

120 hours × 1.25 hours = 150 hours

150 hours = 6.25 days

HOPE THIS HELPS!!!

-Silver

Answer:

6.25 hours

Step-by-step explanation:

1 ¼ × 5 = 6.25

Given m = 3/2 and the point (0, -6), which of the following is the point-slope form of the equation?

Answers

Answer:

Step-by-step explanation:

The equation of a line in

point-slope form

is.

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

2

2

y

y

1

=

m

(

x

x

1

)

2

2

−−−−−−−−−−−−−−−−−−−−−−

where m represents the slope and

(

x

1

,

y

1

)

a point on the line

here

m

=

2

and

(

x

1

,

y

1

)

=

(

3

,

0

)

y

0

=

2

(

x

3

)

y

=

2

(

x

3

)

in point-slope form

Does this graph represent a function? Why or why not?
• A. No, because it is not a straight line.
C B. No,
because it fails the vertical line test.
C. Yes, because it is curved line.
D. Yes, because it passes the vertical line test.

Answers

Answer:

Option D is the correct answer

Step-by-step explanation:

D. Yes, because it passes the vertical line test.

PLS HELP!! :))

Find the surface area of a sphere with a diameter of 8 ft. Round your answer to the
nearest tenth.

Answers

The formula is A= 4(pi)r*squared* 201.06

If the manager sold 15 corn dogs, how would this quantity be represented in her table?

Answers

Answer:

Not enough information.

Step-by-step explanation:

What kind of table do you want.

Answer:

I had the same question, it would be -15 because in the video on the assignment it says the answers are the opposite.

Step-by-step explanation:

Which of the following statements are true? Select all that apply.
63=3*3*3*3*3*3
025=2x5
45=4*4x4x4x4x4
03=3*3*3*3
023=4*4*4
52=5*5

Answers

Answer:

a

Step-by-step explanation:

Factor the follow expression:
8x−10

Select one:

2(4x−10)

2(x−5)

8(x−10)

2(4x−5)

Answers

hereeeeeeeeeee 2(4x-5)

Answer:

2(4x-5)

Step-by-step explanation:

can you please help me with this?

Answers

Answer:

36 cm squared is the anwer

Answer:

96cm²

Step-by-step explanation:

you must find the surface area of each side then add it all up

1)
15 ft
12 ft
18 ft
A) 116.9 ft2
C) 216 ft?
E) 54 ft
B) 115.2 ft2
D) 108 ft2

Answers

Answer:

D

Step-by-step explanation:

If 3 students eat 2 pizzas how many pizzas are needed for 54 students

Answers

Answer:

18 pizzas

Step-by-step explanation:

shamika grew by 14 cm in the past year, and is now 1.33 meters tall. how tall in meters was shamika last year

Answers

She was 1.19m tall last year

How do you write 5.13 × 10–4 in standard form?

Answers

Answer:

0.000513

Step-by-step explanation:

I hope that is useful for you :)

Need help with this, the answer is 61 but I need the work for it.

Answers

Answer:

61

Step-by-step explanation:

Arc AC = 180

Arc DC = 58

Arc AC = Arc AD + Arc DC

180 = Arc AD + 58

122 = Arc DC

Tangent Chord Angle = 1/2Intercepted Arc

Angle DBA = 1/2 Arc DC

Angle DBA = 1/2 (122)

Angle DBA = 61

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