1answer.
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
Mnenie [13.5K]
3 years ago
9

magazine provided results from a poll of adults who were asked to identify their favorite pie. Among the ​respondents, ​% chose

chocolate​ pie, and the margin of error was given as percentage points. What values do ​, ​, ​n, E, and p​ represent? If the confidence level is ​%, what is the value of ​?
Mathematics
1 answer:
Alex73 [517]3 years ago
5 0

Complete Question

A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 ​respondents, 12 ​% chose chocolate​ pie, and the margin of error was given as plus or minus 5 percentage points.What values do ​ \r p ,  \ \r q, ​n, E, and p​ represent? If the confidence level is 90​%, what is the value of \alpha ​?

Answer:

a

   \r p is the sample proportion   \r  p  =  0.12

   n is the  sample size is  n  =  500

   E is the  margin of error is E  =  0.05

   \r  q represents the proportion of those that did not chose chocolate​ pie i.e                        \r  q  =  1-  \r p

b

   \alpha  = 10\%

Step-by-step explanation:

Here

    \r p is the sample proportion   \r  p  =  0.12

   n is the  sample size is  n  =  500

    \r  q represents the proportion of those that did not chose chocolate​ pie i.e  

      \r  q  =  1-  \r p

      \r  q  =  1-  0.12

      \r  q  = 0.88

     E is the  margin of error is E  =  0.05

Generally \alpha is the level of significance and it value is mathematically evaluated as

     \alpha  = ( 100 -  C  )\%

Where  C is the confidence level which is given in this question as  C =  90  \%

So  

    \alpha  = ( 100 -  90  )\%

    \alpha  = 10\%

You might be interested in
About how much would it cost to buy 4cd/mp3 players and 3 mp3 players
Mumz [18]
Average price of a CD/ mp3 player is : $ 150

Meanwhile , average price of an mp3 player is : $50

To buy 4 cd/mp3 player, we need $ 150 x 4 = $ 600
To but an mp3 player, we need $50 x 3      = $ 150 

The total is  $ 750

Hope this helps
5 0
2 years ago
Bens score in a game is x points and Olives score is three times that of ben. Their combined point total is -48 points.
andrew-mc [135]
B. The equation is 4x = -48. Ben’s point total is -12.
6 0
2 years ago
Increasing the sample size of an opinion poll will (a) reduce the bias of the poll result. (b) reduce the variability of the pol
julsineya [31]

Answer:

(b) reduce the variability of the poll result.

Step-by-step explanation:

when the sample size of an opinion poll is increased, more data will be gathered about the population, and when there is enough data present, The estimates that is made afterward base on the gathered data will be more accurate compare with when there is small sample size. It should be noted that when the sample size of an opinion poll is increased, it will reduce the variability of the poll result.

3 0
3 years ago
The triangle below can be best classified as?
Ierofanga [76]

Answer:

obtuse scalene

Step-by-step explanation:

Three different sizes.

3 0
2 years ago
A rectangular garden has a length that is modeled by the expression2X -7 and a width of 3X^2+4x. What is the area of the garden?
DochEvi [55]

Answer:

  • A = 6x³ - 13x² - 28x

Step-by-step explanation:

<u>Area of rectangle:</u>

  • A = lw

<u>Given:</u>

  • l = 2x - 7
  • w = 3x² + 4x

<u>The area is:</u>

A = (2x - 7)(3x² + 4x) =

   2x(3x² + 4x) - 7(3x² + 4x) =

   6x³ + 8x² - 21x² - 28x =

   6x³ - 13x² - 28x

6 0
2 years ago
Read 2 more answers
Other questions:
  • Pls help being timed
    5·2 answers
  • A dog's weight increased by 50% in 3 years. By the end of 3 years, the dog weighed 45 pounds. How much did the dog weigh 3 years
    8·2 answers
  • Math question down below
    11·1 answer
  • What is the property demonstrated by: (10+y)-16=10+(y-16)
    12·2 answers
  • Plz help ill give extra points
    10·2 answers
  • PLS HURRY!!!!! 40 POINTS!!!!
    8·2 answers
  • 3. Sadie and Josie are asked to wrie an expression equivalent to 3(2x+3y).
    14·1 answer
  • Nine more than the product of seven and three
    14·1 answer
  • Juliette bought 8 ribbons for 1.52
    9·1 answer
  • a radioactive substance has a half-life of 2 seconds. A scientist begins with a sample of 20 grams. How much of the substance re
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!