A random sample of size 16 is drawn from a nor- mal distribution having σ = 6.0 for the purpose of test- ing H0: µ = 30 versus H1: µ = 30. The experimenter chooses to deine the critical region C to be the set of sample means lying in the interval (29.9, 30.1). What level of signiicance does the test have? Why is (29.9, 30.1) a poor choice for the critical region? What range of y values should comprise C, assuming the same α is to be used?

I will answer in English.

The weight of the kid is 30kg.

the surface of his sneakers is 150cm^2

and we know that pressure is defined as: P = F/A

where F is force, in this case, F is the weight of the kid, and A is the surface area.

When the kid is using both his legs to stand, the weight is divided equally between both legs, so we have 15kg per leg.

Then the pressure in each foot is:

P = 15kg/150cm^2 = 0.1 kg/cm^2

If he is using only one leg, then all the 30kg are being supported by that leg, then the pressure is:

P = 30kg/150cm^3 = 0.2g/cm^3