Use the appropriate table to find each of the following. Draw and label a sketch of the distribution.
- What is the critical value for a right-tailed Z test with α = 0.08?
- What are the critical values for a two-tailed Z test with α = 0.04?
- What is the critical value for a left-tailed T test with α = 0.10 and n = 18?
a) The critical value for a right -tailed Z test with =0.08 is ,
; From Z-table
b)
The critical value for a two -tailed Z test with =0.04 is ,
; From Z-table
c)
The critical value for a left -tailed T test with =0.10 and degrees of freedom=df=n-1=18-1=17 is ,
; From t-table
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