It Is Generally Believed That No More Than 0

Multiple Choice

It is generally believed that no more than 0.50 of all babies in a town in Texas are born out of wedlock. A politician claims that the proportion of babies born out of wedlock is increasing. In testing the politician's claim, how does one define the population parameter of interest?

A) The current proportion of babies born out of wedlock
B) The mean number of babies born out of wedlock
C) The number of babies born out of wedlock
D) The general belief that the proportion of babies born out of wedlock is no more than 0.50