Unhealthy Days in Cities The number of unhealthy days based on the AQI (Air Quality Index) for a random sample ofmetropolitan areas is shown. Round the sample statistics and final answers to at least one decimal place.15 3 23 21 14 5 40 61 39Send datate ExcelConstruct a 95% confidence Interval based on the data. Assume the variable is normally distributed.

The question is about confidence interval Given : To find : 95 % CI for the popl. mean

Answered: Unhealthy Days in Cities The number 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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Teacher claims that the mean time required to complete a Test is two hours. A sample of 10 students took 1.7, 1.5, 2.6, 2.2, 2.4 2.3, 2.6, 3.0, 1.4 and 2.3 hours to complete the test. Test his claim to see if the mean time to complete the Test is different from two house. Use alpha = 0.05. Find p-value. State your hypothesis and your conclusion.
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Which statistical analysis is needed to address this research question: Relationship commitment will change over time. One sample t-test Two sample t-test ANOVA Paired sample t-test
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Answer sub parts d through g
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Question) You have obtained the following data: Total counts = 903 Background counts = 71 Provide the net counts plus or minus one standard deviation.
The histogram below shows the ages (in years) of Honda Civic automobiles listed for sale on the Seattle Times Web site on November 26, 2003. 20 15 10 2 4 6 8 10 12 14 16 18 Age (years) Which of the following terms apply to this histogram? (Select all that apply.) O negatively skewed(to the left) O uniform O symmetric O bimodal O unimodal O positively skewed(to the right) Which measure of center is most appropriate for this data? O median O mean Which measure of spread is most appropriate for this data? O standard deviation M # of cars

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