Background Information: Is the weight of adult airline passengers (person plus c
ID: 3203329 • Letter: B
Question
Background Information: Is the weight of adult airline passengers (person plus clothing and carry-on baggage) changing? A national study in 2003 reported the average total passenger weight was 190 pounds. A small study of 20 randomly selected passengers boarding flights in Denver, CO was conducted in December 2010. Total passenger weights rounded to the nearest pound are shown below. The SPSS output is also shown below. 203 245 256 194 202 251 196 220 227 169 240 155 255 230 192 238 243 250 160 204 Statistics Histogram Valid 20 Missing Mean 216.50 Median 223.50 Mode 155 Std. Deviation 32.032 Range 101 Minimui 155 Maximum 256 94.50 Percentiles 223.50 75 244.50 a. Multiple modes exist. The smallest weight lbsExplanation / Answer
Consider a national survey in 2003 reported the average total passenger weight was 190 pounds.
Consider a random sample of 20 selected passengers boarding flights in Denver
From the data, the average weight of the all adults passengers of the sample is 216.50
That is, the this single value represents the whole sample of observations.
There is 32.032 of error present in the sample of 20 adult passengers.
The shape of the distribution is left tail. Since the longer tail is from upper right to lower left.
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