Anutrition expert claims that the average american is overweight. to test his claim, a random sample of 27 americans was selected, and the difference between each person's actual weight and idea weight was calculated. for this data, we have x¯=15.6 and s=27.6. is there sufficient evidence to conclude that the expert's claim is true? carry out a hypothesis test at a 2% significance level.

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet