What is the margin of error of a confidence interval of 95% used in a sample proportion of 51% and a sample size of 64? (ANSWER THE PROPORTION IN DECIMAL FORM, USE 4 DECIMAL PLACES)A statistics organization declared that 75% of students feel stressed during online classes. If the survey will be conducted again using a level of significance of 0.10 and a margin of error of 8.4%, how many students must be included in the sample? (FOR THIS QUIZ ROUND OFF YOUR ANSWER IN 4 DECIMAL PLACES NOT IN WHOLE NUMBERS)