Healthy adults need at least 7 hours of sleep a night. (Teens need at least9 hours.) A survey of 74,571 Americans 18 and older found that 35.3% reportedsleeping less than 7 hours per night on average. People who reported sleepingless than 7 hours were more likely to report unintentionally falling asleepduring the day at least once in the preceding 30 days (46.2% versus 33.2%).They were more likely to report nodding off or falling asleep while driving inthe preceding 30 days (7.3% versus 3.0%). They also were more likely to reportsnoring (51.4% versus 46.0%). (Source: CDC Morbidity and Mortality Weekly Report, March 4, 2011,www.cdc.gov/mmwr/preview/mmwrhtml/mm6008a2.htm?s_cid=mm6008a2_w)a. Make a two-way frequency table, with one column for those who get at least7 hours of sleep and one for those who do not. The rows will represent thenumber in each group who did and did not report snoring.b. What percentage of all of the Americans surveyed snore?c. What is the relative risk of nodding off or falling asleep while driving inthe preceding 30 days for the two groups? Use this ratio in a sentence thatexplains what it means.

Given information: It is given that healthy adults need at least 7 hours of sleep a night.

Answered: Healthy adults need at least 7 hours of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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…
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