3. A research company asked randomly selected people how often they went to the library in a year. The following data was recorded: MEN (popl): n1=10 512:5.88 I1=5.1U WOMEN ([30:12): n2=10 522=5.79 i 2=7.30 Using a 10% level of significance, were the number of library visits by men significantly less than the library visits by women? Assume equal population variances. 4. Five years ago, STATSCAN reported that 80% of students graduated from high school. A sample of 400 students showed that 82.25% had graduated. Using a 5% level of significance, has the percentage of students graduating increased? a] Determine the p-value and interpret the results