is a t Distribution Appropriate: A sample with size n = 18 hasx = 87.9, and s = 10.6. The dotplot for this sample is given below. O O O O O o 60 70 80 90 100 Indicate whether or not it is appropriate to use the t-distribution. No 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 - 1 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. af i 17 standard error