Statistics Quiz

7. Among freshmen at a certain university, scores on the Math SAT followed the normal curve, with an average of 550 and an SD of 100.

Drunk driving is an issue that effects many people across our nation. People do not realize the affects alcohol can have on the body and mind that slow decision making while driving. This issue begins in the home. Children see their parents, or other adults figures, have a beer or a cocktail and get in the car. Thus, making it seem like it is acceptable to drink and drive. “One in three people will be involved in an alcohol-related crash in their lifetime” (MADD).

Let’s assume you have taken 1000 samples of size 64 each from a normally distributed population. Calculate the standard deviation of the sample means if the population’s variance is 49.

σA = 0.3 × (0.07)2 + 0.4 × (0.06)2 + 0.3 × (0.08)2 − (0.021)2 = 0.004389,

If they get a sample proportion over 24% they are going to shut down their email server. What is the probability this will happen?

M.A.D.D. is a political interest group for all mothers against drunk driving. It was specifically created for mothers of kids who have fallen victim to drunk drivers, whether it be in injury or in death. Founded on September 5th 1980, M.A.D.D. has made a huge impact on the government today and an even bigger impact on society. The idea of M.A.D.D. was first introduced by a mother, Candice Lightner, who lost her thirteen year old daughter in a car accident killed by an intoxicated driver. She took action and initiative after the loss of her daughter to help prevent drunk driving accidents so other parents wouldn’t have to go through the grief of the loss of a loved one, especially their son or daughter. Whether it be spreading awareness,

Drinking and driving can cause accidents. For instance, every ninety seconds a person is injured in a drunk driving crash. Of the 209 child passengers ages 14 and younger who died in alcohol-impaired driving crashes in 2014, over half (116) were riding in the vehicle with the alcohol-impaired driver. Of the 1,070 traffic deaths among children ages

Another organization which helps to prevent drinking and driving is MADD. MADD stands for Mothers against Drunk Driving. MADD's campaign supports law enforcers by engaging in checkpoints ran by police officers. In addition, MADD offers a program known as, Sober to Start; this is MADD’s way of supporting ignition of Interlock devices. These devices requires a convicted drunk driver to blow into it in order to start the car, In addition, another of MADD’s programs, Secure the Future is a brain storming activity which allows participants to come up with ideas to reduce drunk driving in the present, and the future.

28. The Polo Development Firm is building a shopping center. It has informed renters that their rental spaces will be ready for occupancy in 19 months.  If the expected time until the shopping center is completed is estimated to be 14 months, with a standard deviation of 4 months, what is the probability that the renters will not be able to occupy in 19 months?

Table 4 examines the number of alcohol-impaired fatalities for drivers’ age 16-19 who had a blood alcohol level of .08+ at the moment of accident. The table separates the numbers by male and female gender. We can determine from this data that male drivers were reported three times as much when involved in traffic fatalities of BAC = .08+ from 2007-2011.

Supporting details- The Motor Vehicle Crashes and other Alcohol-related Accidents are underage drinking is motor vehicle crashes. In 2002, 6.788 persons aged 15 to 20 were involved in fatal crashes and 29% from the drivers in this group that got killed had been drinking for a while. The adults that were drinking alcohol and driving a lot of people they been in a car accident. The risk of alcohol-related crashes because of their relative inexperienced and their increased impairment on drinking alcohol. The results on ages it was 5.9% of 16-year-olds, 12.6% of 17-year-olds, 16.4% of 18-year-olds, 21.1% of 19-year-olds, and 23.4% of 20-year-olds it was reported that these people were driving under the impact of alcohol in 2003. These people that

In 2010, 10,228 people were killed in alcohol-impaired driving crashes, accounting for nearly one-third (31%) of all traffic-related deaths in the United States. Of the 1,210 traffic deaths among children ages 0 to 14 years in 2010, 211 (17%) involved an alcohol-impaired driver. Of the 211 child passengers ages 14 and younger who died in alcohol-impaired driving crashes in 2010, over half (131) were riding in the vehicle with the alcohol-impaired driver. In 2010, over 1.4 million drivers were arrested for driving under the influence of alcohol or narcotics. That is one percent of the 112 million self-reported episodes of alcohol-impaired driving among U.S. adults each year.

Researchers from the University of California, San Diego conducted a study to determine if minimally buzzed drivers were more likely than sober drivers to cause motor vehicle accidents. Using information from the U.S. Fatality Analysis Reporting System, the researchers studied the records for 570,731 fatal crashes, which occurred between 1994 and 2011. In particular, the researchers focused on those drivers with a blood alcohol content level of 0.01 to 0.07. The study examined the relationship between the degree to which motorists were assigned sole official blame for crashes and their BAC levels.

In the recent past, there has been a remarkable growth in cases involving drivers being consumed drugs or alcoholic drinks. On a daily basis, newspapers are filled with disturbing accident news stories from through out the country, in many cases as a

At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and a standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. Above what value do 2.5% of the sample means fall? ANSWER: 1.057