Please help me only if you really know how to solve it as I am stuck and I cannot solve these questions. Dont give me random answers, please. You can use any software to solve it if it's easier ( we use R). If I am satisfied, i will also make sure you are satisfied too.

Link to textbook if needed with the content: https://drive.google.com/file/d/1ptM7Pzw8e364cZpwdQXU30GVhrQc1AZ7/view?usp=sharing

Questions:

Question Suppose we are interested in calculating a 95% confidence interval for the mean of a normally distributed population. We've drawn a sample of 10 observations from this population, and found a sample mean of 304.6 and a sample standard deviation of 34.0. What is the appropriate lower endpoint of the 95% interval for mu? (e.g. If the interval is (3.712,9.674), give 3.712 as your response.) (Give your response to at least 3 decimal places. Give only your numeric response, and no extra characters or symbols.) Your Answer: 280.280 Your