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
natka813 [3]
3 years ago
5

Before the 1936 US presidential election, a popular poll predicted that Alfred Landon would comfortably win against Franklin D.

Roosevelt. The poll randomly sampled people from sources like telephone and car registration records, but the country was in an economic crisis, so many voters without those luxuries were not included in the poll. Voters with lower incomes favored Roosevelt, who ultimately won with 62%, percent of the vote—one of the largest margins of victory ever in a US presidential election. Which type of bias does this scenario best describe?
a. Bias from undercoverage
b. Bias from using voluntary response
c. Response bias
d. Nonresponse bias
Mathematics
1 answer:
Vinvika [58]3 years ago
3 0

Answer:

wrong subject

Step-by-step explanation:

You might be interested in
The amount of money spent on textbooks per year for students is approximately normal.
Ostrovityanka [42]

Answer:a

a

   336.04    <  \mu < 443.96

b

  The  margin of error will increase

c

The  margin of error will decreases

d

The 99% confidence interval is  0.4107 <  p  < 0.4293

Step-by-step explanation:

From the question we are  told that

   The sample size  n =  19

    The sample mean is  \= x  = \$\  390

    The  standard deviation is  \sigma =  \$ \  120

 

Given that the confidence level is  95% then the level of significance is mathematically represented as

           \alpha = 100 -  95

          \alpha  =  5 \%

          \alpha  =  0.05

Next we obtain the critical value of \frac{\alpha }{2} from the normal distribution table

    So  

         Z_{\frac{\alpha }{2} } =  1.96

The  margin of error is mathematically represented as

      E =  Z_{\frac{\alpha }{2} } *  \frac{\sigma}{\sqrt{n} }

=>    E = 1.96 *  \frac{120}{\sqrt{19} }

=>   E = 53.96

The 95% confidence interval is  

     \= x  -  E  <  \mu < \= x  +  E

=>   390  -   53.96   <  \mu < 390  -   53.96

=>  336.04    <  \mu < 443.96

When the confidence level increases the Z_{\frac{\alpha }{2} } also increases which increases the margin of error hence the confidence level becomes wider

Generally the sample size mathematically varies with margin of error as follows

         n  \  \ \alpha  \ \  \frac{1}{E^2 }

So if the sample size increases the margin of error decrease

The  sample proportion is mathematically represented as

       \r p  =  \frac{210}{500}

       \r p  = 0.42

Given that the confidence level is 0.99 the level of significance is  \alpha =  0.01

The critical value of \frac{\alpha }{2} from the normal distribution table is  

      Z_{\frac{\alpha }{2} }  =  2.58

  Generally the margin of error is mathematically represented as

       E =  Z_{\frac{\alpha }{2} }*  \sqrt{ \frac{\r p (1- \r p )}{n} }

=>   E =  0.42 *  \sqrt{ \frac{0.42 (1- 0.42 )}{ 500} }

=>     E =  0.0093

The 99% confidence interval  is

     \r p  -  E <  p  < \r p  +  E

     0.42  -  0.0093 <  p  < 0.42  +  0.0093

     0.4107 <  p  < 0.4293

 

4 0
3 years ago
Why lie about my free answers );
dimaraw [331]
I like your sketchers
3 0
3 years ago
Need help ASAP and orange please I’ll give brainiest
Karo-lina-s [1.5K]

Answer:

A

Step-by-step explanation:

Just switch the orders around where it is going from the highest power to the lowest power

6 0
2 years ago
Read 2 more answers
About 62% of the human body is composed of water. Write this percent as a fraction in simplest form.
aleksklad [387]
<span>31/50 by the way I love how some people realize so many people answered this question already and decide they should add something that is totally not necessary. 

</span>
7 0
3 years ago
Read 2 more answers
An icicle has a volume of 3769.91 mm if this icicle Drips at a rate of 75 mm/min How long will it take the icicles completely me
kvasek [131]

Answer:

The answer is 3,019.92 cubic millimeter

Step-by-step explanation:

take 375 plus 375 to get 750

then 3769.91 - 750 to get the 3,019.92

3 0
3 years ago
Read 2 more answers
Other questions:
  • A boat can travel 66 miles on 11 gallons of gasoline how far can it travel on 41 gallons?
    9·1 answer
  • What is the surface area of this figure?
    15·2 answers
  • I need the help if you can please help me
    5·2 answers
  • Mass of a spherical grape is 8.4 grams and
    15·2 answers
  • PLEASE HELP ME
    11·1 answer
  • What’s the 69th term of the arithmetic sequence -13, -33, -53
    8·1 answer
  • Trey's truck has a 80 gallon tank. The fuel gauge points to . How much fuel does he need to fill that tank?
    7·1 answer
  • Graph the line<br> y=-4x+2<br> ‼️will make brainliest‼️
    5·2 answers
  • Select all the equations that have the same solution as 3x - 12=24
    12·1 answer
  • Simplify the expression.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!