Question

8. It is of interest to compare the measurements of photoresist thickness (in kA) for two samples of wafers baked at two different temperatures (H0: ?1 = ?2 vs. H1: ?1 ? ?2). T 1: 11.2, 7.1, 8.1, 11.7, 11.3, 10.8, 6.5, 8.3 T 2: 5.3, 6.7, 7.5, 7.0, 8.1, 7.4, 3.8, 9.0 A two-sample t-test was performed with equal variance assumption and an ? = 0.05. What’s the value of the test statistic t0? (a) 1 (b) 3 (c) 5 (d) 7 (e) 9 (f) 11 (g) 13 9. Following problem 8 above, which of the following critical value would you compare the test statistic t0 with to draw your conclusion? (a) t0.1, 14 = 1.345 (b)t0.05, 14 = 1.761 (c) t0.025, 14 = 2.145 (d) t0.01, 14 = 2.624 (e) none of them 10. Following problem 8 and 9 above, which of the following conclusion is true? (a) Reject H0 (b) Fail to reject H0 (c) Reject H1 (d) Fail to reject H1 (e) none of them

          8. It is of interest to compare the measurements of photoresist thickness (in kA) for two samples of wafers baked at two
different temperatures (H0: ?1 = ?2 vs. H1: ?1 ? ?2).
T 1: 11.2, 7.1, 8.1, 11.7, 11.3, 10.8, 6.5, 8.3
T 2: 5.3, 6.7, 7.5, 7.0, 8.1, 7.4, 3.8, 9.0
A two-sample t-test was performed with equal variance assumption and an ? = 0.05. What’s the value of the test
statistic t0?
(a) 1 (b) 3 (c) 5 (d) 7 (e) 9 (f) 11 (g) 13
9. Following problem 8 above, which of the following critical value would you compare the test statistic t0 with to draw
your conclusion?
(a) t0.1, 14 = 1.345 (b)t0.05, 14 = 1.761 (c) t0.025, 14 = 2.145 (d) t0.01, 14 = 2.624 (e) none of them
10. Following problem 8 and 9 above, which of the following conclusion is true?
(a) Reject H0 (b) Fail to reject H0 (c) Reject H1 (d) Fail to reject H1 (e) none of them

8. It is of interest to compare the measurements of photoresist thickness (in kA) for two samples of wafers baked at two
different temperatures (H0: ?1 = ?2 vs. H1: ?1 ? ?2).
T 1: 11.2, 7.1, 8.1, 11.7, 11.3, 10.8, 6.5, 8.3
T 2: 5.3, 6.7, 7.5, 7.0, 8.1, 7.4, 3.8, 9.0
A two-sample t-test was performed with equal variance assumption and an ? = 0.05. What’s the value of the test
statistic t0?
(a) 1 (b) 3 (c) 5 (d) 7 (e) 9 (f) 11 (g) 13
9. Following problem 8 above, which of the following critical value would you compare the test statistic t0 with to draw
your conclusion?
(a) t0.1, 14 = 1.345 (b)t0.05, 14 = 1.761 (c) t0.025, 14 = 2.145 (d) t0.01, 14 = 2.624 (e) none of them
10. Following problem 8 and 9 above, which of the following conclusion is true?
(a) Reject H0 (b) Fail to reject H0 (c) Reject H1 (d) Fail to reject H1 (e) none of them

Added by Alejandro M.

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