**8.6 Statistical Problem (SP)**According to the General Social Survey, the average age when a person's first child was born is 24.3 years. To determine how different urban working-class people are from this norm, a random sample of 105 urban working-class individuals was gathered. The sample found that their average age when their first child was born is 22 years, with a standard deviation of 4.6 years. Are working-class people in urban areas different from Americans in general? Conduct both one- and two-tailed tests.**8.7 Statistical Observation and Calculation (SOC)**Statewide, the population as a whole watches 6.2 hours of TV per day. A random sample of 1017 senior citizens in the state reported watching an average of 5.9 hours per day with a standard deviation of 0.7 hours. Is the observed difference significant compared to the statewide average?

Given that We have to conduct hypothesis testing for Are working-class people in urban areas…

Answered: ►SHOW ANSWER 8.6 SP According to the…

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 Wechsler IQ test is normally distributed with mean 100 points and standard deviation 15 points. Andy Warhol was found to have an IQ of 86 on the Wechsler IQ test. What was his z-score, and what does it mean?
The University of Montana admission standards require students to have an ACT score of at least 22. We know that Montana ACT scores are normally distributed with a mean of 20.1 and a standard deviation of 4. A: Students in Oregon have a mean ACT score of 21.1 with a standard deviation of 2.8. If we chose one student each at random from Oregon and from Montana, which student would be more likely to meet the ACT requirements of the University of Montana? Explain your answer using the appropriate statistics and a correctly labeled and shaded normal distribution. B: We know that the Montana ACT scores are normally distributed with a mean of 20.1 and a standard deviation of 4. Assume that the top 2% of individuals in the state are eligible for a state-funded scholarship. What score does an individual need on the ACT to be eligible? Explain your answer using the appropriate statistics and a correctly labeled and shaded normal distribution
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JA researcher takes an SRS of 80 people who go golfing.The average to be u52 years old. It was also determined that the standard deviation of cac ot golfers was la What is the probability that the sample mean is kss. than 47 years old? age of all golferswas determined years.
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