6. For each of the following cases, give the size of the sample r required for statistical significance:

(a) n=5, α= 05, one-tailed test

(b) n=24, α= 05, two-tailed test

(c) n=42, α= 01, two-tailed test

(d) n=125, α= 05, two-tailed test

(e) n=1500, α= 05, one-tailed test

(f) n=3, α= 01, two-tailed test