Question
On September 25, 2011 Michael Vick, the quarterback for the Philadelphia Eagles broke his non-throwing hand in a football game against the New York Giants.
On September 25, 2011 Michael Vick, the quarterback for the Philadelphia Eagles broke his non-throwing hand in a football game against the New York Giants. ESPN then posted a poll on their website.
The poll asked viewers to predict which team would win the NFC East Division. The Eagles play in the NFC East Division. By 4:15 pm, 914 fans had voted. 25% of them thought the Eagles would still win the division.
What can we conclude from a 95% confidence interval about the opinions of ESPN viewers?
a. We are 95% confident that between about 22% and 28% of fans thought the Eagles would still win the division.
b. nothing because the sample was not randomly selected
c. We are 95% confident that between about 22% and 28% of ESPN viewers thought the Eagles would still win the division.
d. nothing because the count of successes is too small
In a random sample of 100 LMC students, 32 report reading the LMC Experience regularly. Use a 95% confidence interval to estimate the percentage of all LMC students who read the LMC Experience regularly.
Round the standard error to 2 decimal places.
a. We are 95% confident that between 27% to 37% of LMC students read the Experience.
b. We are 95% confident that between 22% and 42% of all LMC students read the LMC Experience regularly.
c. We should not calculate the 95% confidence interval because normality conditions are not met.
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