Question: 11. For the interval estimation of u when a is assumed known, the proper distribution to use is the a standard normal distribution b.

11. For the interval estimation of u when a is assumed known,

11. For the interval estimation of u when a is assumed known, the proper distribution to use is the a standard normal distribution b. I distribution with n degrees of freedom C. t distribution with n - 1 degrees of freedom d. t distribution with n-2 degrees of freedom

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