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16 Find the critical value for a 2 tailed t test when a = .02 n = 22 17 If p = .23, n = 121, p-hat = .25, what is Z ? 18 Claim: p <.21 a=".03," p-hat=".11," n="43." can you use normal distribution answer or and explain your reasoning. calculate chi square if s=".55" sigma=".65" l="16.57," r="16.27," where does fall>