Hypothesis Testing 1

# Hypothesis Testing 1 - case the equipment was operated for...

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Classroom Activity Hypothesis Testing The introduction of printed circuit boards (PCBs) in the 1950s revolutionized the electronics industry. However, solder-joint defects on PCBs have plagued electronics manufacturers since the introduction of the PCB. A single PCB may contain thousands of solder joints. Current technology uses lasers and X-rays for inspection. A particular manufacturer of laser-based inspection equipment claims that its product can inspect on average at least 10 solder joints per second when the joints are spaced .1 inch apart. The equipment was tested by a potential buyer on 48 different PCBs. In each
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Unformatted text preview: case the equipment was operated for exactly one second. The number of solder joints inspected is on each run is recorded here. 10 9 10 10 11 9 12 8 8 9 6 10 7 10 11 9 9 13 9 10 11 10 12 8 9 9 9 7 12 6 9 10 10 8 7 9 11 12 10 10 10 11 12 9 7 1. The potential buyer want to know whether the sample refute the manufacturer's claim. Specify the null and alternative hypotheses that the buyer should test. 2. Conduct the hypothesis test you described in #1. Use alpha = .05. State the statistics and the p-value of the test. 3. Interpret the results in the context of the problem....
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## This note was uploaded on 02/12/2012 for the course ECON 136 taught by Professor Johanek during the Spring '11 term at Boston Architectural.

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