One model of earth's population growth is
p(t)=641+11e−.08t
, where t is measured in years since 1990, and p is measured in billions of people. which of the following statements are true? check all that apply.
a. the population of earth is increasing by a steady rate of 8% per year.
b. the carrying capacity of earth is 64 billion people.
c. the population of earth will grow exponentially without bound.
d. in 1990, there were 5.33 billion people.

People end up tossing 12% of what they buy at the grocery store. assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. calculate the mean and the standard error for the sample proportion p. b. describe the sampling distribution of p in part a. draw a graph of this probability distribution with its mean and standard deviation. what is the probability that your survey will provide a sample proportion more than 15%? c. d. population proportion? what is the probability that your survey will provide a sample proportion within + 0.03 of the