Alcohol abuse has been described by college presidents as the number one problem on campus, and it is an important cause of death in young adults. How common is it? A survey of 119 randomly selected U.S. college students collected information on drinking behavior and alcohol-related problems. The researchers defined “frequent binge drinking” as having five or more drinks in a row three or more times in the past two weeks. According to this definition, 41 students were classified as frequent binge drinkers. Use the data to construct and interpret a 98% confidence interval for the percentage of students who are “frequent binge drinking”. Procedure:       Assumptions: (select everything that applies) Population standard deviation is unknown Population standard deviation is known Sample size is greater than 30 Normal population The number of positive and negative responses are both greater than 10 Simple random sample Unknown parameter:

Alcohol abuse has been described by college presidents as the number one problem on campus, and it is an important cause of death in young adults.  How common is it?  A survey of 10,904 randomly selected U.S. college students collected information on drinking behavior and alcohol-related problems.  The researchers defined “frequent binge drinking” as having five or more drinks in a row three or more times in the past two weeks.  According to this definition, 2486 students were classified as frequent binge drinkers.  Construct and interpret a 99% confidence interval for the proportion of students who are classified as binge drinkers. (Use the four-step process.)   What would you include in "State" from the 4-step process?

Each year, researchers at the U.S. Bureau of Labor Statistics (BLS) administer the American Time Use Survey (ATUS). Researchers estimate the average amount of time Americans spend on daily activities, such as working, housework, and leisure activities. In particular, one activity that is of interest is the average amount of time Americans spend watching television each day A researcher complied a random sample of 14 Americans and asked each person how much time they spent watching television each day. The results are given below. 2.11.3 0.9 3.3 2.3 1 4 2 3.1 0.8 4.4 1.5 2.2 3 Determine the point estimate , and the sample sadard deviation , Round the solutions to four decimal overline x places , if necessary . overline x = Box; s = Using a 98% confidence level , determine the margin of error, E, and a confidence interval for the average time Americans spend watching television each dayReport the confidence interval using interval notation Round solutions to two decimal places , if…

The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education you've completed?" and "If you're employed full-time, how many hours do you spend working at your job during a typical week?" We're interested in examining whether or not there are differences in the typical work week length based on the level of education of the worker. We perform a one-way, independent-samples ANOVA test, with the "groups" in the ANOVA being categories of highest educational degree of the worker ("less than high school," "bachelor's degree," etc.) and the variable being the number of hours written down by the worker in answering the survey question. (a) Suppose that the results of our ANOVA are given in the ANOVA table below. Complete the missing cell of the ANOVA table (rounding your answer to two decimal places). Source of Degrees of,Sum of variation Between freedom squares…