Question: Confidence level is 95%, ? is not known, and the normal quantile plot of the 17 salaries (thousands of dollars) of Miami Heat basketball players

Confidence level is 95%, ? is not known, and the normal quantile plot of the 17 salaries (thousands of dollars) of Miami Heat basketball players is as shown.

15 1.2 0.4 0.4 -08 12 -1.5 2100 4200 6300 8400 10500

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

(a) Find the critical value t_?/2,

(b) Find the critical value z_?/2,

15 1.2 0.4 0.4 -08 12 -1.5 2100 4200 6300 8400 10500 12800 14700 16800 18900 21000 X Values Z score

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