Each person in a random sample of 2000 likely voters (as defined by a professional polling organization) was questioned about his or her political views. Of those
surveyed, 1308 felt that the economy's state was the most urgent national concern.
Reference: Ref 20-1
The standard error SE of p, the estimated proportion viewing the economy's state as
most urgent, is
a) 0.0001.
b) 0.0312.
C) 0.0106.
d) 0.4926.

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.