Question

h Problems 3-6, use the results in the table to (a) draw a normal ralbability plot, (b) determine the linear correlation between the berved values and expected z-scores, (c) determine the critical atlne in Table VI to assess the normality of the data. riqs 6. fi Expected z-score Index, i Observed Value T islo eo.10 o -1.28 1 1 0.64 0.26 3 2 ngt3 -0.20 0.42 19 0.20 0.58 30 e88 0.74 0.64 6 99 0.90 1.28 fubility plot to assess whether

Answer 1

a)

observed value	expected z-score
1	-1.28
3	-0.64
19	-0.2
30	0.2
88	0.64
99	1.28

expected z-score 1,5 0.5 20 40 80 100 120 -0.5 -1 -1,5 60

b)

using Excel

function correl

r	0.927930284

r = 0.9279

c)

n = 6 , alpha = 0.05

critical value = 0.888

since

r > r_Critical

we can say that data is normal.