Question

In: Statistics and Probability

A sociologist is interested in the effects of select media exposure on young adult (18+) political...

A sociologist is interested in the effects of select media exposure on young adult (18+) political opinion. In a national survey of young adult political opinions (ranging from 0 [far left] to 1 [far right]) earlier this year, the mean political opinion score was 0.29. A recent survey of 400 randomly selected LSU students found a mean political opinion score of 0.62, with a sample standard deviation of 0.15.

  1. a) Is the difference significant (α=0.05)? Show all details of the test. (assumptions, hypotheses, test statistics, t critical, and conclusion)

Solutions

Expert Solution


Related Solutions

A sociologist is interested in the effects of select media exposure on young adult (18+) political...
A sociologist is interested in the effects of select media exposure on young adult (18+) political opinion. In a national survey of young adult political opinions (ranging from 0 [far left] to 1 [far right]) earlier this year, the mean political opinion score was 0.29. A recent survey of 400 randomly selected LSU students found a mean political opinion score of 0.62, with a sample standard deviation of 0.15. a) Is the difference significant (α=0.05)? Show all details of the...
Suppose researchers interested in the effects of adolescent exposure to mold in a household is associated...
Suppose researchers interested in the effects of adolescent exposure to mold in a household is associated with asthma. Researchers collected information about a sample of children living in homes determined to have a significant amount of potential mold exposure and determined that 154 out of the 213 children had asthma. After a sample of 428 households with not a sufficient amount of mold exposure, only 108 children were found to have asthma. A) Conduct a statistical test to determine if...
Purpose: The effects of political posts on social media and impact on anxiety, character, ethics, virtue,...
Purpose: The effects of political posts on social media and impact on anxiety, character, ethics, virtue, and civility. 1. Formulate 5 specific research questions in regard to your purpose 2. Write a Research Proposal 3. Select Sample Parameters
About 90% of young adult Internet users (ages 18 to 29) use social-networking sites. (a) Suppose...
About 90% of young adult Internet users (ages 18 to 29) use social-networking sites. (a) Suppose a sample survey contacts an SRS of 1400 young adult Internet users and calculates the proportion pˆp^ in this sample who use social-networking sites. What is the approximate distribution of pˆp^? μpˆμp^ (±±0.00001) = , σpˆσp^ (±±0.00001) = What is the probability that pˆp^ is between 87% and 93%? This is the probability that pˆp^ estimates pp within 3%. (Use software.) P(0.87<pˆ<0.93)P(0.87<p^<0.93) (±±0.0001) =...
About 90% of young adult Internet users (ages 18 to 29) use social-networking sites. (a) Suppose...
About 90% of young adult Internet users (ages 18 to 29) use social-networking sites. (a) Suppose a sample survey contacts an SRS of 1600 young adult Internet users and calculates the proportion pˆp^ in this sample who use social-networking sites. What is the approximate distribution of pˆp^? μpˆμp^ (±±0.00001) = , σpˆσp^ (±±0.00001) = What is the probability that pˆp^ is between 87% and 93%? This is the probability that pˆp^ estimates pp within 3%. (Use software.) P(0.87<pˆ<0.93)P(0.87<p^<0.93) (±±0.0001) =...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT