Each case below defines a language over {a, b}. In each case, decide whether the language can be accepted by an FA, and prove that your
answer is correct.
d. The set of odd-length strings with middle symbol a.

An environmental protection agency study of 12 automobiles revealed a correlation of 0.47 between engine size and emissions. at 0.01 significance level, can we conclude that there is a positive association between the variables? what is the p value? interpret.