Unformatted text preview: (e) Consider the following: If the process of selecting a sample of size 50 and then computing 95% condence intervals is repeated 100 times, 95 of the resulting intervals will include . Is this statement correct? Why or why not? 2. A condence interval is desired for the strayload loss (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray load loss is normally distributed with = 3 . 0. (a) Compute a 95% CI for when n = 25 and x = 58 . 3. (b) Compute a 95% CI for when n = 100 and x = 58 . 3. (c) How and why do your answers from (a) and (b) dier? (d) Compute a 99% CI for when n = 100 and x = 58 . 3. (e) Compute a 82% CI for when n = 100 and x = 58 . 3. (f) How and why do your answers from (b), (d) and (e) dier? (g) How large must n be if the width of the 99% interval for to be 1.0? 3. Section 5.3 : 5, 8, 14. 1...
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- Winter '08
- Normal Distribution, cough, Interval finite element, Student's t-distribution, alcohol content