Confidence level is 95%, is known to be $4,385,000, and the dotplot of a sample of

Confidence level is 95%, σ is known to be $4,385,000, and the dotplot of a sample of Red Sox baseball player salaries is as shown below.

Assume that we want to construct a confidence interval. Do one of the following, as appropriate:

(a) Find the critical value t_α/2,

(b) find the critical value z_α/2,

(c) state that neither the normal distribution nor the t distribution applies.

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