Please help me with this question with an explanation. I really appreciate if you can help me to figure out the procedure to get the answer by using T-83. Thank you so much!!!

Question 4 1 pts Find the lower limit of 95% confidence interval. An SRS of 36 students were taken from high schools in a particular state. The average test score of the sampled students was 54 with a standard deviation of 14.47. Give the lower limit of the interval approximation. Question 5 1 pts Find the upper limit of 90% confidence interval. An SRS of 151 students were taken from high schools in a particular state. 119 students responded yes when asked about if they felt ready for college. What is the upper limit of the interval approximation for the percent of students who feel ready in the population? Write as a decimal (not as a percent). So 0.8234 not 82.34% (if your answer was 0.8234)Question 6 1 pts Find the upper limit of 95% confidence interval. An SRS of 161 students were taken from high schools in a particular state. 83% of students responded yes when asked about if they felt ready for college. What is the upper limit of the interval approximation for the percent of students who feel ready in the population? Write as a decimal (not as a percent). So 0.8234 not 82.34% (if your answer was 0.8234) Question 7 1 pts Find the upper limit of 95% confidence interval. An SRS of 53 students were taken from high schools in a particular state. Assume it is known the standard deviation of all high school students in the state is 9.78. The average test score of the sampled students was 66. Give the upper limit of the interval approximation.Question 8 1 pts Find the upper limit of 90% confidence interval. An SRS of 46 students were taken from high schools in a particular state. Assume it is known the standard deviation of all high school students in the state is 14.08. The average test score of the sampled students was 81. Give the upper limit of the interval approximation