### 50. Use the following information to construct the confidence intervals specified to estimate µ 51. A sample of size n = 10 is randomly selected from a normal population with mean µ = 52 and variance σ2 = 22.5. The sample value X-bar is calculated.

50. Use the following information to construct the confidence intervals specified to estimate µ a) 95% confidence; = 25, σ2 = 12.25, and n = 60. b) 98% confidence; = 119.6, S2 = 570.7321, and n = 75. c) 90% confidence; ∑X = 1814.4, σ2 = 0.948676, and n = 32. 51. A sample of size n = 10 is randomly sel