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
hichkok12 [17]
3 years ago
11

Just before a referendum on a school​ budget, a local newspaper polls 402 voters to predict whether the budget will pass. Suppos

e the budget has the support of 52​% of the voters. What is the probability that the​ newspaper's sample will lead it to predict​ defeat?
Mathematics
1 answer:
Sliva [168]3 years ago
7 0

Answer:

21.21%

Step-by-step explanation:

Assume that proportion of support follows normal distribution.For resulting in defeat the proportion of support should less than 0.5.Given that the proportion of support is p= 0.52.

Sample size(n)= 402

We know that standard deviation is given as

\sigma = \sqrt {\dfrac {p(1-p)}{n}}

Now by putting the values

\sigma = \sqrt {\dfrac{0.52\times 0.48}{402}}

σ=0.0249

Proportion of support follows normal distribution with mean is 0.52 and standard deviation is 0.0249

We know that Z=\dfrac{\bar{X}-\mu }{\sigma }

So

Z=\dfrac{0.5-0.52 }{0.0249}

Z= -0.80

So P(Z<-.80) =0.2118 from standard table.

So the probability of news paper to predict defeat is 21.21%

You might be interested in
M m m m basically what does x equal i guess i dont know for 3x+4
andrey2020 [161]

Answer:

<u>x = -4/3</u>

Step-by-step explanation:

3x + 4 = 0

3x = -4

<u>x = -4/3</u>

3 0
3 years ago
Read 2 more answers
The slope of the line through -9,6 and -6,-9
Kruka [31]

Answer:

Step-by-step explanation:

7 0
3 years ago
I don't btgcygljhbihlihnjknkl;n
Digiron [165]
Yeah honestly same it’s ok tho
7 0
3 years ago
Read 2 more answers
Explain how a bar model can be used to show a subtraction problem
snow_lady [41]
The amount of money you have each month will be subtracted by the amount that you spend then you would put amount you spent on a bar graph alond with the amount you had
6 0
3 years ago
Help aaahhhh<br>x =x=x, equals <br><br>^\circ <br><br>∘<br><br> degrees
Ganezh [65]

Using supplementary angles, it is found that the measure of angle x is of 65º.

<h3>What are supplementary angles?</h3>

Angles are called supplementary if the sum of their measures is of 180º.

In this problem, angles x, 25, and 90º are supplementary, hence:

x + 25 + 90 = 180

x = 180 - (25 + 90)

x = 65º.

The measure of angle x is of 65º.

More can be learned about supplementary angles at brainly.com/question/12919120

#SPJ1

5 0
2 years ago
Other questions:
  • Walter is 43 years old his daughter Paulette is 7. In how many years will Paulette be one-third of Walters age
    10·1 answer
  • If one guy cuts the grass in one hour and another guy cuts the grass in 30 minutes. How long does it take if they both cut the g
    11·2 answers
  • Which zero pair could be added to the function fon) = x2 + 12x + 6 so that the function can be written in vertex form?
    15·2 answers
  • Find the amount in a continuously compounded account for the following condition.
    5·1 answer
  • The temperature in St. Louis, Missouri, is 31°F. The temperature in Duluth, Minnesota, is -29°F. Is the temperature in St. Louis
    11·1 answer
  • What is the volume of a cylinder with a diameter of 14 cm and a height of 4 cm.
    14·1 answer
  • This table shows values that represent an exponential function. What is the average rate of change for this function for the int
    8·1 answer
  • In a class of 40 students, 75% returned their permission slips for the field trip. How many students returned their permission s
    7·2 answers
  • Work out the angle x please help.
    8·2 answers
  • A) all real numbers; R: all real numbers.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!