Question

In: Statistics and Probability

Based on a recent study, roughly 14% of all college students in the U.S. are vegetarian...

Based on a recent study, roughly 14% of all college students in the U.S. are vegetarian or vegan. In a sample of 310 stats students at a particular university it was found that 13.8% are vegetarian or vegan. Does the data provide evidence that the proportion of students who are vegetarian or vegan in this university is lower than the national figure?

3. During the 2019 NFL regular season, the winning team of each game scored an average of 28.6 points. During the 2019 NFL playoffs, over the 11 games of the playoffs, the winning team scored an average of 29.3 points with a standard deviation of 8.9 points. Does the data provide evidence that the average points scored by the winning team in the playoffs is different than the average points scored by the winning team in the regular season.

Solutions

Expert Solution


Related Solutions

College students Suppose a recent study of 1,000 college students in the U.S. found that 8%...
College students Suppose a recent study of 1,000 college students in the U.S. found that 8% of them do not use Facebook. Which of the following describes the population for this example? -All College students in the US -The 1000 college students who participated in the study -all college students in the US who do not use facebook -The 8% of college students who do not use facebook Which of the following defines what is meant by a control group...
A recent study of college students indicates that 30% of all college students had at least...
A recent study of college students indicates that 30% of all college students had at least one tattoo. A small private college decided to randomly and independently sample 15 of their students and ask if they have a tattoo. Find the standard deviation for this distribution. Select one: 4.50 1.77 3.55 3.15
According to the Institute for Students in Shackles, 70% of all college students in a recent...
According to the Institute for Students in Shackles, 70% of all college students in a recent year graduated with student loan debt.  The University of Florida reports that only 52% of its graduates from a random sample of 500 students have student loan debt. Use a hypothesis test to determine if there is enough evidence to support UF’s claim that student loan debt is less. a) State your null and alternative hypothesis. b) Find p-hat, SD, Z, and the P-value
In a recent study, approximately 42.5% of college students had student loans. A researcher was interested...
In a recent study, approximately 42.5% of college students had student loans. A researcher was interested in determining if the proportion of students that took out student loans differed by the field in which they were studying in. The following data below was collected on 865 college students in seven different fields of study. Test at α = 0.05 to determine if there are significant differences in the proportions of students that take out student loans for each of the...
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...
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...
A study of 60,000 college students (enrolled in 4-year programs) from around the U.S. looked at...
A study of 60,000 college students (enrolled in 4-year programs) from around the U.S. looked at the high school GPA for each student and their College GPA at the end of their first full year of college. The following summary statistics were recorded. Avg(x) = 3.44, SDx = 0.66, Avg(y) = 3.25, SDy = 0.77, r = 0.6 where xj =HS GPA of the jth student and yj =FY GPA of the jth student. Based on this data: (a) Find...
A study of 60,000 college students (enrolled in 4-year programs) from around the U.S. looked at...
A study of 60,000 college students (enrolled in 4-year programs) from around the U.S. looked at the high school GPA for each student and their College GPA at the end of their first full year of college. The following summary statistics were recorded. Avg(x) = 3.44, SDx = 0.66, Avg(y) = 3.25, SDy = 0.77, r = 0.6 where xj =HS GPA of the jth student and yj =FY GPA of the jth student. Based on this data: (a) Find...
A randomly selected sample of 14 students who stayed up all night to study for an...
A randomly selected sample of 14 students who stayed up all night to study for an exam received an average grade of 68% with a standard deviation of 8%. Another randomly selected sample of 12 students who wrote the same exam after a good night’s sleep received an average grade of 75% with a standard deviation of 7%. At a 5% significance level, does the sample provide enough statistical evidence to support a claim that students who stay awake all...
According to a study conducted by ABODO, about 70% of all college students use an online...
According to a study conducted by ABODO, about 70% of all college students use an online dating app. Suppose you want to know if Harvard students are similar to their national peers. You ask a random sample of 125 Harvard students and find that 78 of them use an online dating app. a. Does this sample provide significant evidence at the ? = .05 level that the true proportion of Harvard students that use an online dating app is different...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT