state the z-scores for
Part a
Confidence level 95% ------> z=1.96
we have 95%
divide by 2
95%/2=47.5%
Convert to decimal
47.5%=47.5/100=0.475
using the z-scores table
For p=0.475 ------> z=1.96
Part b
88.4%
Divide by 2
44.2% ------> 0.442
using the z-scores table
For p=0.442 -------> z=1.57
Part c
72.39%
Divide by 2
36.195% ----->0.36195
using the z-scores table
For p=0.36195 ------> z=1.09
Part d
99.85%
Divide by 2
49.925% -----> 0.49925
using the z-scores table
For p=0.49925 ------> z=3.18
Part e
37.33%
Divide by 2
18.665% ------> 0.18665
using the z-scores table
For p=0.18665 -----> z=0.49