For the following scenarios, what kind of distribution applies?

1) Sample size, n = 25; Sample mean =122; Population standard deviation = 24.4; parent distribution unknown shape

a) Normal distribution (Z)

b) t-distribution

c) Either normal or t-distribution would work

d) None of the above (Neither distribution would work)

2) Sample size, n = 80; Sample proportion = 42%

a) Normal distribution (Z)

b) t-distribution

c) Either normal or t-distribution would work

d) None of the above (Neither distribution would work)

3) Sample size, n = 60; Sample mean =12; Sample standard deviation = 2.4; parent distribution unknown shape

a) Normal distribution (Z)

b) t-distribution

c) Either normal or t-distribution would work

d) None of the above (Neither distribution would work)