Question
In: Statistics and Probability
A poll of 1,190 adults found that 476 felt economic problems were the most pressing of...
A poll of 1,190 adults found that 476 felt economic problems were the most pressing of those facing the country. The sample proportion who expressed that opinion is:
Solutions
orchestra answered 2 years agoRelated Solutions
A public opinion poll asked 930 randomly selected adults if they felt safer given that the...
A public opinion poll asked 930 randomly selected adults if
they felt safer given that the U.S. has nuclear weapons, and 543 of
the respondents answered “yes.”
Find the sample proportion of adults that answered “yes” in
this poll.
Use a 90% confidence level to compute the margin of error for
the point estimate in part (a) above.
State the 90% confidence interval for the population proportion
of adults who feel safer given that the U.S. has nuclear
weapons.
Correctly...
An ABC News poll asked adults whether they felt genetically modified food was safe to eat....
An ABC News poll asked adults whether they felt genetically
modified food was safe to eat. Thirty-five percent felt it was
safe, 52% felt it was not safe, and 13% had no opinion. A random
sample of 120 adults was asked the same question at a local county
fair. Forty people felt that genetically modified food was safe, 60
felt that it was not safe, and 20 had no opinion. At the 0.01 level
of significance, is there sufficient evidence...
In a poll of 232 adults, it was found that 22% smoked cigarettes in the past...
In a poll of 232 adults, it was found that 22% smoked cigarettes
in the past week. Test the claim that less than 25% of adults have
smoked within the past week. Use 0.05 significance level Careful:
You need to convert percent into decimals. (Round to 2 decimals) Ho
: p = Ha : p < z - Test Statistic = (Round to 2 decimals) p -
Value = (Round to 4 decimals) Conclusion: There is sufficient
evidence to (support...
Assume that adults were randomly selected for a poll. They were asked if they "favor or...
Assume that adults were randomly selected for a poll. They were
asked if they "favor or oppose using federal tax dollars to fund
medical research using stem cells obtained from human embryos." Of
those polled, 485 were in favor, 402 were opposed, and 125 were
unsure. A politician claims that people don't really understand the
stem cell issue and their responses to such questions are random
responses equivalent to a coin toss. Exclude the 125 subjects who
said that they...
Assume that adults were randomly selected for a poll. They were asked if they "favor or...
Assume that adults were randomly selected for a poll. They were
asked if they "favor or oppose using federal tax dollars to fund
medical research using stem cells obtained from human embryos." Of
those polled,489 were in favor, 395 were opposed, and 115 were
unsure. A politician claims that people don't really understand
the stem cell issue and their responses to such questions are
random responses equivalent to a coin toss. Exclude the 115
subjects who said that they were...
Assume that adults were randomly selected for a poll. They were asked if they "favor or...
Assume that adults were randomly selected for a poll. They were
asked if they "favor or oppose using federal tax dollars to fund
medical research using stem cells obtained from human embryos." Of
those polled, 488 were in favor, 402 were opposed, and 117 were
unsure. A politician claims that people don't really understand
the stem cell issue and their responses to such questions are
random responses equivalent to a coin toss. Exclude the subjects
who said that they were...
Assume that adults were randomly selected for a poll. They were asked if they "favor or...
Assume that adults were randomly selected for a poll.
They were asked if they "favor or oppose using federal tax dollars
to fund medical research using stem cells obtained from human
embryos." Of those polled, 488 were in favor, 399 were opposed,
and 121 were unsure. A politician claims that people don't really
understand the stem cell issue and their responses to such
questions are random responses equivalent to a coin toss. Exclude
the 121 subjects who said that they...
Assume that adults were randomly selected for a poll. They were asked if they "favor or...
Assume that adults were randomly selected for a poll. They were
asked if they "favor or oppose using federal tax dollars to fund
medical research using stem cells obtained from human embryos." Of
those polled,
483483
were in favor,
402402
were opposed, and
115115
were unsure. A politician claims that people don't really
understand the stem cell issue and their responses to such
questions are random responses equivalent to a coin toss. Exclude
the
115115
subjects who said that they...
Assume that adults were randomly selected for a poll. They were asked if they "favor or...
Assume that adults were randomly selected for a poll. They were
asked if they "favor or oppose using federal tax dollars to fund
medical research using stem cells obtained from human embryos." Of
those polled,
484484
were in favor,
395395
were opposed, and
118118
were unsure. A politician claims that people don't really
understand the stem cell issue and their responses to such
questions are random responses equivalent to a coin toss. Exclude
the
118118
subjects who said that they...
1. From a recent poll in which respondents were asked if they felt that U.S. nuclear...
1. From a recent poll in which respondents were asked if they
felt that U.S. nuclear weapons made them feel safer, 550 out of
1000 people said “no.”
a) Find the sample proportion, ?̂, of people who responded “no”.
Use the appropriate formula and show your work.
b) Find the margin of error for a 95% confidence interval for
the true population proportion of people who feel that U.S. nuclear
weapons do not make them feel safer. Round to three...
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