I need help with this Lab Assignment.

a) Give a point estimate (mean) for the average height of all people at the place where you work. Start by putting the 20 heights you are working with into the blueDatacolumn of the spreadsheet. What is your point estimate, and what does this mean?

b) Find a 95% confidence interval for the true mean height of all the people at your place of work. What is the interval? [see screenshot below]

c) Give a practical interpretation of the interval you found in part b, and explain carefully what the output means. (For example, you might say, "I am 95% confident that the true mean height of all of thepeople in my company is between 64 inches and 68 inches").

d) Post a screenshot of your work from the t value Confidence Interval for from the ConfidenceInterval tab on the Week 6 Excel spreadsheet

Step 5: Now, change your confidence level to 99% for the same data, and post a screenshot of this table, as well.

Step 6: Compare themargins oferror from the two screenshots. Would the margin of error be larger or smaller for the 99% CI? Explain your reasoning.

A21 V X V fx A B C D E F G H 75 Heights in Inches 62 65 65 65 66 67 67 68 72 75 59 Mine 63 62 64 61 65 66 19 60 64