According to a recent study, cell phones are the main medium for teenagers to stay connected with friends and family. It is estimated that 90% of older tens (aged 16-19) and 70% of younger teens (aged 13-15) own a cell phone. Suppose 60% of all teens are older teens.
If a teen is randomly selected, what is the probability that he/she is an older teen? A. 0.9 B. 0.7 C. 0.6 D. 0.4
According to a recent study, cell phones are the main medium for teenagers to stay connected...
According to Pew Research Center 2011 study, a typical American teen owning a cell phone spends an average of 96 minutes a day text messaging. Assume normal distribution with a standard deviation of 33 minutes. a. What percent of teens send less than 75 minutes per day on text messaging? b. Find and interpret P75, the 75th percentile Problem #4 According to a recent study, the mean amount of sleep college students aged 17-24 get on a typical night is...
After reading the article, answer the questions that follow. Turning Off, Dining In Last night at dinner, I suddenly realized that no one around our table had said anything for quite a while. I looked at my son, who had headphones on and whose face was aglow with the white-blue light of this phone on which he was watching a YouTube video. My daughter was also bathed in this same glow, but a tap-tap-tap was coming from her phone as...
Read about Cokes strategy in Africa in the article below and discuss the ethics of selling soft drinks to very poor people. Is this an issue that a company like Coke should consider? Africa: Coke's Last Frontier Sales are flat in developed countries. For Coke to keep growing, Africa is it By Duane Stanford Piles of trash are burning outside the Mamakamau Shop in Uthiru, a suburb of Nairobi, Kenya. Sewage trickles by in an open trench. Across the street,...