Question

Question 13 --/1 View Policies Current Attempt in Progress Is a t-Distribution Appropriate? A sample with size n= 18 has = 87.9 , and s = 10.6 .The dotplot for this sample is given below. HOOOOO OOOO 00 of 60 70 80 100 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 -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. df = standard error = e Textbook and Media

Answer 1

Solution:

A sample with size n = 18 has h = 87.9 and s = 10.6 The dotplot for this sample is given below. OO OOO OOOO 60 80 90 100 70 Indicate whether or not it is appropriate to use the t-distribution No. It is not appropriate to use the t-distribution Because the dotplot shows the distribution of the data is left-skewed and not the normally distributed 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. df = i -1 standard error = 1 -1