The owner of a fine-dining restaurant claims that at least 72% of their customers are giving huge amounts of tips after dining. A random sample of 470 customers have been observed, and 329 of them gave huge amounts of tips. At alpha = 0.02, is there sufficient evidence to support the owner’s claim? Use the critical-value approach.

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Q: If I am conducting a one-tailed z test and my risk is 1% what should my critical value be?

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Q: What is the critical value for a one sided z-test with an alpha = .02?

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Q: The owner of a fine-dining restaurant claims that at least 72% of their customers are giving huge…

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