Significance Tests and Decision Making

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What is it called when something is unlikely to happen by chance alone?

• statistically significant

• alpha

• confidence level

• probability

A sports publication states that 32% of married men cannot watch football games because their wives prevent it.  You think that this is untrue.  What is your null hypothesis?

• The proportion of married men who cannot watch football because their wives prevent it is 0.32.

• The proportion of married men who cannot watch football because their wives prevent it is greater than 0.32.

• The proportion of married men who cannot watch football because their wives prevent it is less than 0.32.

• The proportion of married men who cannot watch football because their wives prevent it is not 0.32.