Ajeweler buys gold jewlryand resells the gold to refinery. the jewers buys gold for 1235.55 per ounce, and then resells it for 1376.44 per ounce. how much pfofit does the jeweler make from buying and reselling 73.5 ounce of gold

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)