Is a t-Distribution Appropriate? A sample with size n = 18 has x = 87.9, and s = 10.6. The dotplot for this sample is given below. 0 0 0 0 0 60 70 80 90 100 Indicate whether or not it is appropriate to use the t-distribution. If it is appropriate, give the degrees of freedom for the t-distribution and give the estimated standard error. If it is not appropriate. enter - I in both of the answer fields below. Enter the exact answer for the degrees of freedom and round your answer for the standard error to two decimal places. of i standard error =