Find the z-scores for which 90% of the distribution area lies between -z and z. a) (-1.645, 1.645) b) (-.99, 0.99) Oc) (-1.96, 1.96) d) (-2.33, 2.33)

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Q: Find the z-score for which 89% of the distribution's area lies between -z and z. -1.5982, 1.5982…

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Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 7. Do…

A: given: n = 14 μ = 7 α = 0.05 Formula Used: t = X-μSn