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Should the statistician use a t distribution a normal distribution or neither to test the nul hypothesis The sample mean x bar for a data

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Should the statistician use a t distribution a normal distribution or neither to test the nul hypothesis The sample mean x bar for a data set is 3 36 s 0 376 and n 55 The data is approximately normal and ois unknown Ho M 3 326 H 3 326 O Neither O Normal distribution

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