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8 January, 18:00

The accompanying normal probability plot was constructed from a sample of 30 readings on tension for mesh screens behind the surface of video display tubes used in computer monitors. Does it appear plausible that the tension distribution is normal

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  1. 8 January, 18:13
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    we can conclude that it appears plausible that the tension distribution is normal since the sample of 30 readings is taken.

    Step-by-step explanation:

    We are given that the accompanying normal probability plot was constructed from a sample of 30 readings on tension for mesh screens behind the surface of video display tubes used in computer monitors.

    According to Central Limit Theorem we can have a normal distribution if we take a large sample.

    So the question is how much sample size do we need?

    The rule of thumb is to take a sample size of at least 30 to ensure a normal distribution.

    Therefore, we can conclude that it appears plausible that the tension distribution is normal since the sample of 30 readings is taken.
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