A survey of 4972 U.S. students aged 12 to 17 years revealsthat 25% have received mean or hurtful comments online inthe past 30 days.19 You take a random sample of 15undergraduates and ask them whether they have receivedmean or hurtful comments online in the past 30 days. Therate at your university matches this 25% rate.19. Data can be found at cyberbullying.org/ 2019-cyberbullying-data.What is the probability that no more than 7 of the 15students in your sample say that they have received hurtfulcomments online in the past 30 days? Give your answer tofour decimal places.probability:0.0173Incorrect

Answered: A survey of 4972 U.S. students aged 12…

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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The mean work week for engineers in a start-up company is believed to be about 62 hours. A newly hired engineer hopes that it's shorter. She asks 8 engineering friends in start-ups for the lengths of their mean work weeks. Their responses are 50,51,45,51,56,64,66,63 n = . s = || 18
According to a college survey, 32% of all students work full time. Find the mean for the number of students who work full time in samples of size 16. Round your answer to the nearest hundredth if needed.
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Texting while driving has become a national focus now that cell phones are ubiquitous and texting while driving results in ever-increasing injuries and deaths. According to 2013 study, 44.5% of US Teenage drivers text while driving. You want to see how Gainesville teenage drivers compare to national teens. You randomly select 300 local high school students (ages 16-19) and ask if they have texted while driving within the past 30 days. The data is recorded in the table. Yes No 142 158 Find a 95% confidence interval for the percentage of teenage drivers who text while driving. Then explain what the confidence interval means in this context.

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