An educational study to be conducted requires a test score in the middle 40% range. If the population mean equals 100 and the standard deviation equals 15, find the highest and lowest acceptable test scores that would enable a candidate to participate in the study. Assume the variable is normally distributed.

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

Whose conclusion is correct? choose all that apply. (two max) elijah emily edward esme

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.