Determine the uppertail critical value in each of the following circumstances. (Round to four decimal places as needed)
a. 
1−α= 0.95, n=63 
d. 
1−α=0.95, n=28 

b. 
1−α= 0.99, n=63 
e. 
1−α=0.90, n=18 

c. 
1−α= 0.95, n=57 
a. t = (Round to four decimal places as needed)
b. t = (Round to four decimal places as needed)
c. t = (Round to four decimal places as needed)
d. t = (Round to four decimal places as needed)
e. t = (Round to four decimal places as needed)
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