Could someone me with these questions? ! i need fast
here are the answers:
a. global communications change
b. us lifestyles change
c. us economic change
d. global population change
e. us population change
f. global environmental change
which do they match to? ?
9. efforts to protect natural resources
10. preferences for new leisure activities
11. growing number of people on the planet
12. growing numbers of older americans
13. american companies buying other companies
14. easier international messaging

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i. e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i. e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?

Saks fifth avenue wants to learn about its consumers' attitudes toward on-line purchases. there are numerous studies that are available about consumers and on-line buying, but saks believes its customers might be different from the usual on-line consumer profile, so they decide to conduct their own study. if saks were to use the available data about consumer attitudes, it would be using data; however, if saks does its own study it would collect data.