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In: Statistics and Probability
Problems 6-10: In 2015 about 60% of college students used Twitter. In a recent study of...
Problems 6-10: In 2015 about 60% of college students used Twitter. In a recent study of
100 students, 80 now use Twitter. Is this evidence to think the percent has changed? We
wish to conduct a hypothesis test with 5% significance.
- State the null and alternative hypothesis.
- Find the test statistic and P-value and report those values here:
- What is the decision and conclusion?
- Now, construct a 95% confidence interval using the sample of 100 students and 80
saying they use twitter.
- Does the Confidence Interval support your decision for #8? Why or why not?
- (Bonus): What type of error could we have made in this anaylsis? (Type 1 or Type 2)
Solutions
orchestra answered 1 year agoRelated Solutions
Problems 6-10: In 2015 about 60% of college students used Twitter. In a recent study of...
Problems 6-10: In 2015 about 60% of college students used
Twitter. In a recent study of 100 students, 80 now use Twitter. Is
this evidence to think the percent has changed? We wish to conduct
a hypothesis test with 5% significance.
6) State the null and alternative hypothesis.
7) Find the test statistic and P-value and report those values
here:
8) What is the decision and conclusion?
9) Now, construct a 95% confidence interval using the sample of
100 students...
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