Question

Variable	Count	Mean	StDev	CoefVar	Minimum	Q1	Median	Q3	Maximum
IQ60	36	45.31	12.70	28.03	22.00	36.25	45.00	58.00	73.00
IQ25	36	66.83	14.36	21.48	41.00	54.25	66.50	80.00	94.00

Determine the 95% confidence intervals for each of the data sets, hence interpret the results

Answer 1

Answei Date: 18/01/2019 The 95% confidence interval for the mean 1Q25 is. First, compute t-critical value then find confidence interval. The t critical value for the 95% confidence interval is The sample size is small and two-tailed test. Look in the column headed α = 0.05 and the row headed in the t distribution table byusing degree of freedom is, d,f.= n-1 = 35 The t critical value for the 95% confidence interval is 2.030. 66 .83 ± 2.030 x 1436/J6 66.83 ± 4.86 61.97 to 71.69