Reconsider the television tube brightness experiment in Exercise 8-24. Suppose that the design engineer believes that this tube will require 300 micro amps of current to produce the desired brightness...

Reconsider the television tube brightness experiment in Exercise 8-24. Suppose that the design engineer believes that this tube will require 300 micro amps of current to produce the desired brightness level. Formulate and test an appropriate hypothesis using a = 0.05. Find the P-value for this test. State any necessary assumptions about the underlying distribution of the data.