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?

Which statement best describes how private industry decides where to spend the money on research and development

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2