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
Elina [12.6K]
3 years ago
14

Television networks frequently run public opinion polls on issues of concern. One network conducted a scientific poll asking a q

uestion concerning the approval rating of the way President Obama was handling the Iraq War. At about the same time a second network ran an online poll using a very similar question. The results of the two polls are summarized in the following table.
Poll
Scientific Online
Approve 339 385
Disapprove 780 573
Total 1119 958

We would like to test to see if the two polls are consistent with respect to the proportion who approve of President Obama's handling of the war

If the x^2 test is used to test the null hypothesis, the expected cell count in the online poll for those who approve and that cell's contribution to the value of the test statistic are, respectively,

Group of answer choices

a. 390.1 and 7.70.
b. 333.9 and 6.78.
c. 390.1 and 6.69.
d. 333.9 and 7.81.
e. 362.0 and 1.46.
Mathematics
1 answer:
kobusy [5.1K]3 years ago
4 0

Answer:

Option d

Step-by-step explanation:

Given that television networks frequently run public opinion polls on issues of concern. One network conducted a scientific poll asking a question concerning the approval rating of the way President Obama was handling the Iraq War. At about the same time a second network ran an online poll using a very similar question.

Observed data is

Poll              Scien      Online total

   

approve    339   385      724

disapprove 780        573     1363

                 1119        958     2087

H_0: Both scientific and online are consistent\\H_a: not consistent

(Two tailed chi square test)

Let us find out expected and chi square

Expected = row total x column total/grand total

The cell count expected in the online poll for those who approve

=\frac{724*968}{2087} \\=333.94

chi square = 7.81

Hence option d is right.

You might be interested in
tonya earned $5.00 she put half of the money into savings and kept the rest to spend.she bought a toy for $2.00.how much spendin
nalin [4]

Answer:

50 cents

Step-by-step explanation:

half of 5.00$ is 2.50$

6 0
3 years ago
Last one please help
nlexa [21]
•y-intercept is 20
•y-intercept represents how many glass bottles you need to earn $1.00 if you have 0 aluminum cans
•x-intercept is 50
•x-intercept represents how many aluminum cans you need to earn $1.00 if you have 0 glass bottles
5 0
3 years ago
A road is
Airida [17]

9514 1404 393

Answer:

  25/42 mi

Step-by-step explanation:

5/6 of 5/7 of a mile is ...

  (5/6)(5/7 mi) = 25/42 mi

4 0
3 years ago
X ^-4 + x ^ 3 - 4x ^ 2 = 2x - 4
Lady bird [3.3K]

Answer:

Ok, If you are trying to solve for x then your answer in fraction form is x=4/11. If you want it in decimal form the answer is 0.36(Repeats forever). And these answers are also implying that when you typed a  "^" it meant multiplcation

Step-by-step explanation:

I have used an Online Algebra Calculator to help guide me to my answer and this answer is 100% correct so,

PLEASE MARK BRAINLIEST

4 0
2 years ago
If the cost of a raffle ticket is $2, which of the following expressions could be used to represent the cost of m tickets? 2m 2
Bingel [31]
It would be 2m because each ticket is 2 dollars and then you have to multiply it by the number of tickets you are buying M
6 0
2 years ago
Other questions:
  • The surface area of square pyramid is 1,089 in^2.
    9·1 answer
  • Xiomara bought 3 books that each cost the same amount and a magazine for a total of $27. If the magazine cost $3, then how much
    11·2 answers
  • for a company outing employees voted their preferences of bowling a movie or a baseball game seventy percent which is 56 employe
    11·2 answers
  • X/2.7 = 1.09 <br> FIND THE MEANING OF x
    7·1 answer
  • Find the value of X, I need help solving this
    14·2 answers
  • What is the coordinates after (x+2, y + 3)
    7·1 answer
  • Which choice is the slope-intercept equation of the line shown below?
    8·1 answer
  • 1)
    7·1 answer
  • Solve the absolute value inequality.<br><br> |2x - 3| &gt; 7
    15·1 answer
  • Help pls with this problem
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!