ENGSCI211: Sleep Deprivation - Caloric Efficiency of McDonald’s - Data Analysis Assignment Answer

Task 1: Sleep Deprivation

Students in a statistics class in the United States were asked about the number of hours they usually slept each night, and whether they felt sleep deprived. It is of interest to determine if there is a difference in the average number of hours slept between students who self-reported feeling sleep-deprived and those who did not, and to estimate that difference if one exists. The file sleepDeprivation.txt contain the following variables: Deprived whether the student felt sleep deprived, Yes or No SleepHrs self-reported average number of hours slept, in hours 

Task 2: Caloric Efficiency of McDonald’s

A Professional Teaching Fellow in Engineering Science would like to subsist on McDonald’s alone for a short period as the result of losing a bet. To help attain optimal value-for-money, the Teaching Fellow would like to use the price of a food product to predict the energy content available.

The Teaching Fellow is interested in estimating the relationship between price and energy, and would like to consider the case where they have $5.90 budgeted for their next meal and would like to know how much energy they can expect to consume from a single McDonald’s food product purchased at that price. The file McDonalds.txt contain the following variables:

Price the price of a selection of McDonald’s food products, as collected by the Teaching Fellow Energy the amount of energy available from each food product, in kilojoules Hints:

• Ensure that you check for influential observations.

Task 3: Airline Delays

The Pacific Northwest of the United States experiences adverse weather on a regular basis which contribute to flight delays. At Portland International Airport in Portland, Oregon, the operator is interested in examining and quantifying the relationship, if any, between the average delay time for departing flights that are delayed, and the airline that operated those flights. Information on a sample of delayed flights was taken from the four major US domestic airlines that operate from Portland.

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