(Solution) - Consider the television picture tube brightness experiment descr -(2025 Original AI-Free Solution)

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Consider the television picture tube brightness experiment described in Exercise 8-24.
(a) For the sample size n = 10, do the data support the claim that the standard deviation of current is less than 20 micro amps?
(b) Suppose instead of n = 10, the sample size was 51. Repeat the analysis performed in part (a) using n = 51.
(c) Compare your answers and comment on how sample size affects your conclusions drawn in parts (a) and (b).