There are many, many reams of copy paper in the copy room at Mo and Lana's school. Lana has always wondered how thick a

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There Are Many Many Reams Of Copy Paper In The Copy Room At Mo And Lana S School Lana Has Always Wondered How Thick A 1 (86.14 KiB) Viewed 31 times

There are many, many reams of copy paper in the copy room at Mo and Lana's school. Lana has always wondered how thick a picce of paper actually is. The reams of paper all labeled "20 1b." She contacted the paper company, and they told her that the paper is manufactured in large sheets, and a team (500 large sheets) of 20 1h paper, lxctore cutting them to size, would weigh 20 pounds. They also told her that the mean thickness for their 20 ih paper should be 0.1 mm. Lana decided to check the company's claim. She gathered a random sample of paper marked "2016" and measured the thickness of each sheet of paper in random locations. Her results (in mm) are displayed below: 0.101,0.104,0.102,0.106,0.101,0.104,0.108,0.096, 0.106,0.103,0.107, 0.100,0.104, 0.097, 0.100 a. Lana made the combined boxplot and dot plot below and found the summary statistics shown. Does Lana have evidence that the company's reported average of 0.1 mm is incorrect? Back up your conclusion with statistical evidence. (You may assume that Lana's sample is cquivalent to an SRS from the population of all 20 lb paper from this company). Paper thickness (mm), 20 lb 15 0.1026 0.0035 +++++ 0.095 0.100 + 0.103 0.110 h. It turns out the company rounds all values to the nearest tenth millimeter when reporting their average thicknesses. Does this affect your conclusion? Mo notices an enormous pile of multi-colored index cards next to the copy paper. He grabs a big pile of index cards randomly and counts the number of cards of each color, creating the following table: Blue Red Green Purple Yellow 23 19 27 21 12 the cntire pile? Docs Mo have evidence that the colors are not equally distributed