A study involving stress is done on college campuses across the USA. The study claims that 70% of college students in the USA are stressed. A survey of 200 students at a particular United States college campus finds that 130 students are stressed. Does this new data suggest that the stress percentage of college students in the USA is different from 70%? Perform a significance test by following the procedure of seven steps in the lecture note to verify the claim. Use the related function in R to report the p-value. What's your conclusion based on the result?

Step 1: Specify some model for the data Step 2: Identify the null and alternative hypotheses, H0 and Ha Step 3: Specify a test statistic Step 4: Compute the observed value of the test statistic Step 5: Compute the p-value under H0 Step 6: Specify a significance level Step 7: Compare the p-value and the significance level

(Rstudio)