the worksheet is about chi squares and math the previous number was 8, Please help me with this answer i really need it,

C. Last step - you'll use the rounded integer value of the probability you calculated above and build a confidence interval around it. So for example, if the probability you calculated in B. was 27.85%, you would round to 28% and drop the % sign - just 28. You will build a 97% confidence interval around your number, which represents the sample mean. Assume a sample size of 50, and a standard deviation of 4.0. Once you have the upper and lower bounds of your confidence interval, round those to whole numbers (integers) and combine them. So for example, if your bounds were 20.21 to 35.79, you would combine "20" and "36" to get 2036. Assume the 4 digit number you wind up with is a year. Final Question - Which person born in that year has had their face on a U.S. coin? You need to provide the name and year of birth to get full credit