*An electrical firm manufactures light bulbs that have a lifetime that is approximately normallydistributed with a mean of 800 hours and a standard deviation of 40 hours X~N(µ = 800,0 =40)Test the hypothesis that Ho: u = 800 hours against the alternative, H1: µ > 800 hours, if arandom sample ofn = 40 bulbs has an average life of x = 798 hours. Obtain the confidenceinterval. a = 0.0518.. Write the calculated value.19. Write the table value.20. Decision criteria:21. Decision: Ho22. Two sided confidence interval :P(..

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Description: *An electrical firm manufactures light bulbs that have a lifetime that is approximately normallydistributed with a mean of 800 hours and a standard deviation of 40 hours X~N(µ = 800,0 =40)Test the hypothesis that Ho: u = 800 hours against the altern

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*An electrical firm manufactures light bulbs that have a lifetime that is approximately normally distributed with a mean of 800 hours and a standard deviation of 40 hours X~N(µ = 800, 0 = 40) Test the hypothesis that Ho:u = 800 hours against the alternative, H1: u > 800 hours, if a random sample ofn = 40 bulbs has an average life of x = 798 hours. Obtain the confidence interval. a = 0.05 18.. Write the calculated value. 19. Write the table value. 20. Decision criteria: ......... 21. Decision: Ho 22. Two sided confidence interval : P(...

*An electrical firm manufactures light bulbs that have a lifetime that is approximately normally distributed with a mean of 800 hours and a standard deviation of 40 hours X~N(µ = 800, 0 = 40) Test the hypothesis that Ho:u = 800 hours against the alternative, H1: u > 800 hours, if a random sample ofn = 40 bulbs has an average life of x = 798 hours. Obtain the confidence interval. a = 0.05 18.. Write the calculated value. 19. Write the table value. 20. Decision criteria: ......... 21. Decision: Ho 22. Two sided confidence interval : P(...

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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