Question

In: Statistics and Probability

Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just...

Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just keeping current are all conveniently possible with a smart phone. However, the battery better be charged or the phone is useless. Battery life of course depends on the frequency, duration, and type of use. One study involving heavy use of the phones showed the mean of the battery life to be 11.75 hours with a standard deviation of 2.4 hours. Then the battery needs to be recharged. Assume the battery life between charges is normally distributed. (a) Find the probability that with heavy use, the battery life exceeds 12 hours. (Round your answer to four decimal places.) (b) You are planning your recharging schedule so that the probability your phone will die is no more than 5%. After how many hours should you plan to recharge your phone? (Round your answer to the nearest tenth of an hour.) hours

Solutions

Expert Solution


Related Solutions

Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just...
Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just keeping current are all conveniently possible with a smart phone. However, the battery better be charged or the phone is useless. Battery life of course depends on the frequency, duration, and type of use. One study involving heavy use of the phones showed the mean of the battery life to be 10.75 hours with a standard deviation of 2.2 hours. Then the battery needs...
(1) Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and...
(1) Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just keeping current are all conveniently possible with a smart phone. However, the battery better be charged or the phone is useless. Battery life of course depends on the frequency, duration, and type of use. One study involving heavy use of the phones showed the mean of the battery life to be 11.75 hours with a standard deviation of 3.4 hours. Then the battery...
TOPIC: “An Analysis of the Smart Phone Market” Note: There are data on the Internet about...
TOPIC: “An Analysis of the Smart Phone Market” Note: There are data on the Internet about the total sales and profits of major brands of smart phone. Choose the brands and a time period and analyze accordingly. write an essay using the following guidelines. The paper length is at least 8 pages. The focus is on your ability to analyze a microeconomic topic. Graphs and tables will enhance the quality of your paper and may be part of the minimum...
Choosing the Right Channel is Essential to Any Form of Communication – just as you would...
Choosing the Right Channel is Essential to Any Form of Communication – just as you would not want to learn about the demise of a family member on Facebook, you probably wouldn’t want to hear about all of your casual acquaintances’ accomplishments in person. Choose two communication channels you might use to convey a message in each of the following circumstances and tell why: .You are running a bit late to lunch with a co-worker. .The office closing hour has...
Consider any recent financial news on tv, internet, newspaper, etc., and comment on how the news...
Consider any recent financial news on tv, internet, newspaper, etc., and comment on how the news might affect the market for a particular good. First, decide whether demand or supply or both are affected. Second, would this cause an increase or decrease in demand, supply, or both. Finally, comment on the implications for the new equilibrium quantity and price. For example. Recent calls for a strike against UBER might cause a change in the demand for UBER stock. Since the...
As you consider this question about a project team for a new smart phone, what type...
As you consider this question about a project team for a new smart phone, what type of people do you need from inside the organization – and do you need anyone from outside the organization in beginning? If not, perhaps at a later time?
"Smart phone addiction is a problem affecting millions of people, often holding them back from experiencing...
"Smart phone addiction is a problem affecting millions of people, often holding them back from experiencing the joy of basic everyday life. This addiction consistently leads to an increased likelihood of health issues like anxiety and depression, and increases the chances of car accidents as well as other safety concerns related to excessive smart phone use. My goal is to investigate healthy smart phone practices that can easily be adopted by the masses, in order to promote healthier and safer...
Smart business people carefully consider their use of credit. They evaluate who they lend to, and...
Smart business people carefully consider their use of credit. They evaluate who they lend to, and how they finance their own operations. They know that getting overextended on credit can destroy their business. Suppose that you start up Yellow Submarine Sandwich Shop. You invested your savings of $25,000 and borrowed $65,000 from relatives. Although sales in the first few months are good, you see that you may not have sufficient cash to pay expenses and maintain your inventory at acceptable...
Find any health/nutrition/fitness article in the news media or internet, just make sure to provide the...
Find any health/nutrition/fitness article in the news media or internet, just make sure to provide the source. 200 words
Instructions Many people get all or most of their news from social media. For this project,...
Instructions Many people get all or most of their news from social media. For this project, we are going to be analyzing the content of several social media sites from major news sources, paying particular attention to social media standards, practices, and regulation. Where do you get your news? Start by going to one major news site's FACEBOOK page (CNN, MSNBC, FOX, etc.) Try another different news site's TWITTER feed, and third choose another social media site such as Reddit,...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT