answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
padilas [110]
2 years ago
10

Sameer polled a random selection of 120 of the 250 workers at his office to determine whether they were satisfied with their off

ice supply ordering process. The survey showed that 90 of the workers polled were satisfied. With a desired confidence level of 99%, which has a z*-score of 2.58, what is the margin of error of Sameer’s survey?
Mathematics
2 answers:
solmaris [256]2 years ago
8 0
The answer that I found is 10% or B. I'll comment again to let you know if it is correct.
jeka57 [31]2 years ago
6 0
The margin of error can be calculated with the formula:

ME = z · √(p(1-p)/n)

where:
p = sample proportion
n = sample size
z = z-score

In your case:
p = 90 / 120 = 0.75

ME = 2.58 · √(0.75·0.25/120)
      = 0.10
      = 10%

The margin of error will be 10%.
You might be interested in
What is the most precise name for quadrilateral ABCD with vertices A(-2,4), B(5,6), C(12,4) and D(5,2)?
Dmitry_Shevchenko [17]
I think its going to be around B or D
6 0
2 years ago
Read 2 more answers
Brooklyn and Nicole are both driving along the same highway in two different cars to a stadium in a distant city. At noon, Brook
3241004551 [841]

Answer: B= -54t +367

N=-50t + 347

so in total would be 5 HOURS

3 0
2 years ago
Given a grid with 15 sections, determine how many sections in the grid need to be shaded so the probability of a point chosen at
Nikitich [7]

Answer:

12

Step-by-step explanation:

0.8 is equal to 80%

you need to figure out 80% of 15

100% = 15

10% = 1.5

(x8)

80% = 12

you would need to shade 12 out of 15 boxes which gives 0.8 chance of picking a shaded one

8 0
2 years ago
Read 2 more answers
The general form of the equation of a circle is Ax2 + By2 + Cx + Dy + E = 0, where A = B 0. If the circle has a radius of 3 unit
Anettt [7]
(x-h)^2 + (y-k)^2 = r^2

r=3
(x-h)^2 + (y-k)^2 = 3^2

the center lies on the y-axis --> h=0
x^2 + (y-k)^2 = 3^2 = 9

expand
x^2 + y^2 -2ky + k^2 = 9

x^2 + y^2 -2ky + (k^2 - 9) = 0
compare to general form
A=1 , B=1 and C =0
D= -2k and E=k^2 - 9
8 0
2 years ago
Read 2 more answers
To evaluate an expression with variables: 1. Substitute the values for the variables. 2. Identify grouping symbols, beginning wi
Eduardwww [97]

Evaluate the expression using x = –1 and y=3.

(6x^4y^3)

1. Substitute the values for the variables.

we plug in -1 for x  and 3 for y

(6x^4y^3)

(6(-1)^4(3)^3)

2. Identify grouping symbols, beginning with the innermost symbols.

(6*(-1)^4*(3)^3)

We take exponent and then we multiply

3. Determine and apply the rules of exponents to simplify

(6*(-1)^4*(3)^3)

(-1)^4 = -1 * -1 * -1 * -1 = 1

(3)^3 = 3*3*3= 27

(6*(1)*(27))

4. Evaluate.

(6*(1)*(27))

162

The value of the expression is 162

6 0
2 years ago
Read 2 more answers
Other questions:
  • Jeff is baking a cake. The recipe says that he has to mix 32 grams of vanilla powder to the flour. Jeff knows that 1 cup of that
    6·2 answers
  • For number one I need help
    13·1 answer
  • Jason Reads 126 pages in 6 hours. Joe reads 115 pages in 5 hours how many more pages per hour does Joe read?
    15·1 answer
  • The table lists the number of minutes per game played by a basketball player. What is the median length of the player's minutes?
    12·1 answer
  • Triangle ABC is reflected over the y-axis. What are the coordinates of the reflected triangle?
    13·1 answer
  • Candy draws a square design with a side length of x inches for the window at the pet shop. She takes the design to the printer a
    8·2 answers
  • A rectangular tank that is 5324 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes
    7·1 answer
  • At a large company, employees can take a course to become certified to perform certain tasks. There is an exam at the end of the
    5·1 answer
  • 5. A metal ornament is being designed such that its perimeter is created by four identical three-quarter circles
    6·1 answer
  • A scientist studying water quality measures the lead level in parts per billion (ppb) at each of 49 randomly chosen locations al
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!