Question: For each of the following research questions, specify the parameter and the value that constitute the null hypothesis of "parameter 5 null value." In other words, define the population parameter of interest and specify the null value that is being tested.
a. Do a majority of Americans between the ages of 18 and 30 think that the use of marijuana should be legalized?
b. Is the mean of the Math SAT scores in California in a given year different from the target mean of 500 set by the test developers?
c. Is the mean age of death for left-handed people lower than that for right-handed people?
d. Is there a difference in the proportions of male and female college students who smoke cigarettes?