TRUE OR FALSE

27. A 90% confidence interval for a sample of 50 funds with x-bar =12.9% and s = 3% is 12.9 +/- 0.7%.

28. If 15-minute coffee breaks are given, then the random sample, 12,16,14,18,21,17,15,19,18,16,

statistically substantiates at the 5% significance level that coffee breaks are longer than allowed.

29. In the hypothesis test, Ho:p = 0.10, Ha:p 0.10, x = 27 & n = 200, the p-value is 0.099.

30. Different, significantly different and statistically significantly different have the same meaning.

31. At 5% significance the fail to reject test statistic for Ho:(m1-m2) = 0, Ha:(m1-m2) < 0, n1 = 8,

n2 = 8, x1-bar = 53.6, x2-bar = 61.5, s1 = 12.5 and s2 = 10.6 is t = -1.36.

I said

T

T

F

T

T