July 2012 Gallup poll 3.1.22 In a July 2012 Gallup poll based on a representative sample...
July 2012 Gallup poll 3.1.22 In a July 2012 Gallup poll based on a representative sample of 1014 adult Americans, 48% reported drinking at least one glass of soda pop on a typical day. Now suppose that we test the null hypothesis π = 0.5 vs. the alternative hypothesis π ≠ 0.5. Describe (in words) what the symbol π represents here.
a. proportion of all American adults in the sample who drink at least one soda on a typical day
b. represents 48% of American adults surveyed who drink at least one soda on a typical day
c. represents 50% of Americans who drink at least one soda on a typical day
d. the proportion of all American adults who drink at least one soda on a typical day
Homework Answers
π represents the population proportion. Hence,
π is the proportion of all American adults who drink at least one soda on a typical day.
Option D is correct.
Add Answer to:
July 2012 Gallup poll 3.1.22 In a July 2012 Gallup poll based on
a representative sample...
According to a Gallup poll, more than half of all Americans drink at least one glass...
According to a Gallup poll, more than half of all Americans drink at least one glass of soda per day. Suppose X is a random variable that represents the number of glasses of soda that a randomly selected American drinks each day. The probability distribution for X is given: X 0 1 2 3 4 P(X=x) .4 .33 .14 .09 .04 Given a randomly selected American drinks at least two glasses of soda each day what is the probability that...
Find p-hat 04 Gallup took in 2013 a nationally representative sample of 2027 adults and asked...
Find p-hat 04 Gallup took in 2013 a nationally representative sample of 2027 adults and asked them about their soda consumption. The survey shows that 486 of those surveyed mostly drink diet soda. The proportion 'p-hat' for the proportion of adults who mostly drink diet soda is... Give your answer as a two place decimal)
25. A 2012 Gallup poll asked a random sample of 120 American adults whether they thought...
25. A 2012 Gallup poll asked a random sample of 120 American adults whether they thought the news media exaggerate the seriousness of global warming. The proportion who responded "No" was 59.2%. Is this good evidence that majority of American adults do not believe the news media exaggerate the seriousness of the global warning? a) Set up appropriate null and alternative hypothesis to answer the above question b) Calculate the value of the test statistic. c) Is the data significant...
In 2001, the Gallup poll found that 81% of American adults believed that there was a...
In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. In 2013, the Gallup poll asked 1,039 American adults if they believe there was a conspiracy in the assassination, and found that 634 believe there was a conspiracy ("Gallup news service," 2013). Do the data show that the proportion of Americans who believe in this conspiracy has decreased? Test at the 5% significance level. 1- What is...
A December 2013 Gallup poll of 13,186 nationally representative adults found that 8.9% reported being sick...
A December 2013 Gallup poll of 13,186 nationally representative adults found that 8.9% reported being sick with a cold. Based on these results, what is a 95% confidence interval for the proportion p of American adults who were sick with a cold that month?
In a Gallup poll, 1025 randomly selected adults were surveyed and 29% of them said that...
In a Gallup poll, 1025 randomly selected adults were surveyed and 29% of them said that they used the Internet for shopping at least a few times a year. Find a 99% confidence interval estimate of the proportion of adults who use the Internet for shopping. (5 points)
In a 2012 survey, Gallup asked a random sample of U.S. adults if they would prefer...
In a 2012 survey, Gallup asked a random sample of U.S. adults if they would prefer to have a job outside the home, or if they would prefer to stay home to care for the family and home. Of the 504 males they surveyed, 391 said that they would prefer to have a job outside of the home. Of the 473 females they surveyed, 254 said that they would prefer a job outside of the home. Pm = sample proportion...
15.28 Asking about smoking habits. A 2012 Gallup survey of 1014 American adults asked participants about...
15.28 Asking about smoking habits. A 2012 Gallup survey of 1014 American adults asked participants about their smoking habits. Gallup has been conducting this survey yearly since 1944. The 2012 report was titled “In U.S., Smokers Light Up Less Than Ever,” reflecting the fact that only 1% of smokers in this latest survey stated that they smoke more than a pack a day. Gallup added the following comment to its report: It is possible that the decline in reports of...
1. In June 2013, the Gallup organization had surveyed 1134 American adults and found that 360...
1. In June 2013, the Gallup organization had surveyed 1134 American adults and found that 360 had confidence in public schools. A year later, in June 2014, Gallup surveyed 1134 American adults and found that 298 had confidence in the public schools. A newspaper reporter saw the data and wrote the headline "Confidence in Schools Deteriorates.'" Test the hypothesis that the of proportion of Americans who have confidence in the public school systems is significantly less in 2014 than in...
3. During December 17-22, 2009, a CBS News poll surveyed a sample of adult Americans. The...
3. During December 17-22, 2009, a CBS News poll surveyed a sample of adult Americans. The 95% confidence interval for the proportion of Americans who oppose putting a special tax on junk food such as soda, chips, and candy was (0.57, 0.63). a. What proportion of the adults in the sample opposed a special tax on junk food? [2] b. What is the margin of error of this confidence interval? (2) C. Which of the following could be a 99%...
Find p-hat 04 Gallup took in 2013 a nationally representative sample of 2027 adults and asked them about their soda consumption. The survey shows that 486 of those surveyed mostly drink diet soda. The proportion 'p-hat' for the proportion of adults who mostly drink diet soda is... Give your answer as a two place decimal)
25. A 2012 Gallup poll asked a random sample of 120 American adults whether they thought the news media exaggerate the seriousness of global warming. The proportion who responded "No" was 59.2%. Is this good evidence that majority of American adults do not believe the news media exaggerate the seriousness of the global warning? a) Set up appropriate null and alternative hypothesis to answer the above question b) Calculate the value of the test statistic. c) Is the data significant...
In a Gallup poll, 1025 randomly selected adults were surveyed and 29% of them said that they used the Internet for shopping at least a few times a year. Find a 99% confidence interval estimate of the proportion of adults who use the Internet for shopping. (5 points)
In a 2012 survey, Gallup asked a random sample of U.S. adults if they would prefer to have a job outside the home, or if they would prefer to stay home to care for the family and home. Of the 504 males they surveyed, 391 said that they would prefer to have a job outside of the home. Of the 473 females they surveyed, 254 said that they would prefer a job outside of the home. Pm = sample proportion...
1. In June 2013, the Gallup organization had surveyed 1134 American adults and found that 360 had confidence in public schools. A year later, in June 2014, Gallup surveyed 1134 American adults and found that 298 had confidence in the public schools. A newspaper reporter saw the data and wrote the headline "Confidence in Schools Deteriorates.'" Test the hypothesis that the of proportion of Americans who have confidence in the public school systems is significantly less in 2014 than in...
3. During December 17-22, 2009, a CBS News poll surveyed a sample of adult Americans. The 95% confidence interval for the proportion of Americans who oppose putting a special tax on junk food such as soda, chips, and candy was (0.57, 0.63). a. What proportion of the adults in the sample opposed a special tax on junk food? [2] b. What is the margin of error of this confidence interval? (2) C. Which of the following could be a 99%...
Most questions answered within 3 hours.
-
Assume one of your finals has 50 questions on it, and
lucky for you, it's all...
asked 3 minutes ago -
Rice Products in Bangladesh
Business behavior is derived in large part from the basic cultural
environment...
asked 1 hour ago -
The following base sequence is found for a mRNA fragment from
wild-type E. coli: 5'- UAUCAGUAGAUAAUGUAACC-3'...
asked 1 hour ago -
For this exercise, round all regression parameters to three
decimal places.
One of the two tables...
asked 2 hours ago -
What is the 5% level of significance for mean = 3.60, standard
deviation = 0.94, and...
asked 2 hours ago -
Prior to beginning work on this discussion, please read the
article by Hayley Peterson, 15 Companies...
asked 2 hours ago -
Which pair of aqueous solutions, when mixed, will form a
precipitate?
A) NaNO3 and AgC2H3O2
B)...
asked 2 hours ago -
1-Write an algorithm to get two numbers from the user (as
inputs) and calculate the sum...
asked 6 hours ago -
Define white-collar crime. What is the difference between
offender and offense-based definitions of white-collar crime? What...
asked 6 hours ago -
Consider a reaction which is 1st order with respect to A and 1st
order with respect...
asked 7 hours ago -
c++
The length of the hypotenuse of a right-angled triangle is the
square root of the...
asked 7 hours ago -
When a metal rod is heated, not only its resistance but also its
length and cross‐sectional...
asked 7 hours ago