Help me handwritten and correct ill rate

Defining anything over 30 as a large sample size is not an absolute. Other values for large samples can be selected based on the needs of collecting a particular data set. Using Excel, find the value of the 95% confidence interval for a single sample using the z variable where the mean is 10.00 with a standard deviation of 0.75. When calculating the confidence interval for the z-value, assume any value of n is a large sample, and when calculating the confidence interval for the student's t- distribution, assume any value of n is a small sample. Compute the confidence intervals for: n = 20 O 1.47 O 0.66 O 0.046 0 0.33