Stat 215 Assignment 17

# Stat 215 Assignment 17 - Stat 215 Assignment 17 Module...

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Stat 215 Assignment 17 Module: CI_mu_d , Exercise: Helium Objective : (not available) Construct confidence intervals on the population mean kick distance difference (air - helium). Assess the assumptions underlying the confidence intervals. Problem Description : Two identical footballs, one filled with air and the other with helium, were each kicked in 39 trials. The data is paired by trial since it is expected that the kicker will improve over time. The distance in yards were measured for each kick. The air-filled distance was subtracted from the helium- filled distance in each trial, i.e., a positive difference means that the helium- filled football was kicked further than the air-filled ball. The histogram Java applet displays the kick distance differences for helium minus air-filled paired values. Use the histogram Confidence Interval Report and the linked normal probability plot to answer the following questions: Question By examining the histogram plot, describe the shape of the distribution of distance differences. Do outliers appear to be present? Answer

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Stat 215 Assignment 17 - Stat 215 Assignment 17 Module...

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