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Question: CD Camera produces a new camera that it claims can take an average of more than 7 photographs per second. A test of 36 randomly selected cameras yielded the following sample values:
mean = 7.2 photos/sec
S=.52 photos/sec.

Using alpha = 0.025, determine the critical value rule.

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In a very brief, three line solution, this response provides a complete, neat and step-wise solution to this rather basic statistical question.

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