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Semmy [17]
3 years ago
11

You are working on an assignment for your statistics class. You need to estimate the proportion of students at your college who

delay taking their first math class for at least one year. Which sampling plan will produce the most reliable results
Mathematics
1 answer:
zmey [24]3 years ago
5 0

Answer:

A simple random technique used to choose let's say 100 students can be adopted

Step-by-step explanation:

Because it give each student equal opportunity of being selected to avoid bias

You might be interested in
enelope determined the solutions of the quadratic function by completing the square. f(x) = 4x2 + 8x + 1 –1 = 4x2 + 8x –1 = 4(x2
Marat540 [252]
The correct question is
<span>Penelope determined the solutions of the quadratic function by completing the square.
f(x) = 4x² + 8x + 1
–1 = 4x² + 8x
–1 = 4(x² + 2x)
–1 + 1 = 4(x² + 2x + 1)
0 = 4(x + 2)²
0 = (x + 2)²
0 = x + 2
–2 = x
What error did Penelope make in her work?

we have that
</span>f(x) = 4x² + 8x + 1
to find the solutions of the quadratic function
let
f(x)=0
 4x² + 8x + 1=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

 (4x² + 8x)=-1

Factor the leading coefficient 

 4*(x² + 2x)=-1

Complete the square Remember to balance the equation by adding the same constants to each side.

 4*(x² + 2x+1)=-1+4 --------> ( added 4 to both sides)

Rewrite as perfect squares

4*(x+1)²=3

(x+1)²=3/4--------> (+/-)[x+1]=√3/2

(+)[x+1]=√3/2---> x1=(√3/2)-1----> x1=(√3-2)/2

(-)[x+1]=√3/2----> x2=(-2-√3)/2

therefore

the answer is

<span>Penelope should have added 4 to both sides instead of adding 1.</span>
6 0
3 years ago
Read 2 more answers
Find the distance between theses points:(8,0),(-6,6). Round answer to nearest tenth if necessary.
11111nata11111 [884]

Answer:

Chicken strips

Step-by-step explanation:

Dont ask they are just on my mind

7 0
3 years ago
HELPPPPPPP PLEASEEEE PLEASEEEEEEE
kondor19780726 [428]

Answer:

1. Exact Form: 71/28     Mixed Number Form: 2 15/28

2. Exact Form: 27/10     Mixed Number Form: 2 7/10

3. Exact Form: 5/6

4. Exact Form: 5/4     Mixed Number Form: 1 1/4

5. Exact Form: 25/12     Mixed Number Form: 2 1/2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A face of a solid is
nalin [4]

Answer:

In solid geometry, a face is a flat (planar) surface that forms part of the boundary of a solid object; a three-dimensional solid bounded exclusively by faces is a polyhedron. (OR) A face is a 2D shape that makes up one surface of a 3D shape, an edge is where two faces meet and a vertex is the point or corner of a geometric shape.

Step-by-step explanation:

3 0
2 years ago
A sewing machine sews at a constant rate of 1,500 stitches per minute. If the equation, y = 1,500x represents the relationship b
crimeas [40]

Answer:

Step-by-step explanation:

x is the independent variable. y is the dependent variable.

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3 years ago
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