Please solve this questions

1. FedEx and United Parcel Service (UPS) are the world's two leading cargo carriers by volume and revenue (The Wall Street Journal, January 27, 2004). According to the Airports Council International, the Memphis International Airport (FedEx) and the Louisville International Airport (UPS) are two of the ten largest cargo airports in the world. The following random samples show the tons of cargo per day handled by these airports. Data are in thousands of tons. Memphis 9.1 15.1 8.8 10.0 7.5 10.5 8.3 9.1 6.0 5.8 12.1 9.3 Louisville 4.7 5.0 4.2 3.3 5.5 2.2 4.1 2.6 3.4 7,0 a. Compute the sample mean and sample standard deviation for each airport. b. What is the point estimate of the difference between the two population means? Interpret this value in terms of the higher-volume airport and a comparison of the volume difference between the two airports. c. Develop a 95% confidence interval of the difference between the daily population means for the two airports. 2. In recent years, a growing array of entertainment options competes for consumer time. By 2004, cable television and radio surpassed broadcast television, recorded music, and the daily newspaper to become the two entertainment media with the greatest usage (The Wall Street Journal, January 26, 2004). Researchers used a sample of 15 individuals and collected data on the hours per week spent watching cable television and hours per week spent listening to the radio. Individual Television Radio Individual Television Radio 22 25 9 21 21 10 10 23 23 25 29 11 14 15 22 19 12 14 18 12 13 13 14 17 26 28 14 16 15 23 15 24 23 21 a. Use a 0.05 level of significance and test for a difference between the population means usage for cable television and radio. b. What is the sample mean number of hours per week spent watching cable television? What is the sample mean number of hours per week spent listening to radio? Which mean has the greater usage