Technical Notes Exploratory Analysis The histogram, box darn and peak temporary hookup all show the info is meagerly pay off reorient: the medial (1088.65) is beautifully less(prenominal) than the beggarly (1102.59) and the skewness statisti is a fairly small affirmative value (0.58). Checking Assumptions The independence of the observations appears to be satisfied from the data description. The Shapiro-Wilk due north turn out shws strong establish gainst the hypothesis that the vestigial distribution is normal (P-value=0.008103). The Normal Q-Q dapple shows a slight curve through the points indicating slight right skewness. Although the data argon slightly right skewed, because of the large essay size(n=152) our inference on the intend is valid, by the Central shape Therom. The Box cyclooxygenase plot suggests a power interlingual rendition using a power, p= -0.5 would make the data more(prenominal) shaped like a normal distribution. The Normal Q -Q plot shows the alter data points fictionalization close to the straight aura and the box plot of the modify data looks symmetric with dickens outliers. The numerical summary of the modify data confirms that the modify data are symmetric (mean=1 and normal value=1).
A Shapiro-Wilk test on the transformed data provides no evidence against the transformed data having summate fro a normal distribution (P-value=0.4286). statistical Inference We piece of tail estimate both the population mean and median incomes. The P-values from the t-tests are not sensible here: Executive Summary Our ma gnetise in these data was to estimate both t! he mean and median lifetime (in hours) of light bulbs in a warehouse. We estimate that the mean family income is between 1083 and 1122 hours, while the median family income is between 1074 and 1112 hours.If you want to intromit back a full essay, order it on our website: OrderCustomPaper.com
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