Can you guys please help me I'm confused on this.

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

(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.)

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2