The average price for a gallon of gasoline in the United States is $3.73 and in Russia it is $3.40 (Bloomberg Businessweek, Marc
h 5–March 11, 2012). Assume these averages are the population means in the two countries and that the probability distributions are normally distributed with a standard deviation of $.25 in the United States and a standard deviation of $.20 in Russia. a. What is the probability that a randomly selected gas station in the United States charges less than $3.50 per gallon?
b. What percentage of the gas stations in Russia charge less than $3.50 per gallon?
c. What is the probability that a randomly selected gas station in Russia charged more than the mean price in the United States?
Diana's age=21 years Carmen's age=x years Andrew's age=2x years 21+x+2x=45 21+3x=45 3x=45-21 3x=24 x=24/3 x=8 2x8=16 Carmen is 8 years old and Andrew is 16 years old. Hoped that helps:)
