1. More people in high-income countries than in low-income countries tend to believe that rapid rates of economic growth are not desirable. Some people in ______-income countries are ______ with certain consequences of rapid economic growth, such as higher standard of living. -in low-income countries -are concerned with -in high-income countries -are satisfied with 2. Which of the following best explains what is actually happening to real per capita GDPs of countries? a. Lower-income countries have not caught up to higher-income countries at all. b. Lower-income industrial countries are catching up with higher-income industrial countries. c. Most countries now have similar real per capita GDP levels. d. Poor countries are generally catching up with rich countries. Solution 1. More people in high-income countries than in low-income countries tend to believe that rapid rates of economic growth are not desirable. Some people in in high-income countries are concerned with certain consequences of rapid economic growth, such as higher standard of living. 2. Which of the following best explains what is actually happening to real per capita GDPs of countries? b. Lower-income industrial countries are catching up with higher-income industrial countries. This is happening because of trickle-down effect and rapid industrialization in low income countries..

1. 1. Mr. Jones, who is running for mayor, claims she is favored by 53% of
all eligible voters.Assume the claim is true.What is the probability that
in a random sample of 400 registered voters from the city, less than 49% will favor
2. A coin is tossed 100 times.Find the probability you will getmore than 47 heads.
Solution
(1) P(phat<0.49) = P((phat-p)/sqrt(p*(1-p)/n) <(0.49-0.53)/sqrt(0.53*(1-0.53)/400))
=P(Z<-1.6) = 0.0548 (from standard normal table)
(2) Givne n=100, p=0.5
mean=n*p=100*0.5=50
standard deviation =sqrt(n*p*(1-p))=sqrt(100*0.5*0.5) =5
So the probability is
P(X>47) = P((X-mean)/s >(47-50)/5) = P(Z>-0.6) = 0.7257