Question

"1.25 Exercise 11.24 compares lead concentrations in cathode ray tubes, depending on which company manufactured the tubes themselves The same study also made comparison, depending on which company manufactured the television screens and computer monitors_ Sometimes, the CRT manufacturer is different from the television or computer manufacturer: ) The table below shows concentrations of lead for CRTs in televisions or computers manufactured by four companies.'2 Toshiba Samsung Sharp Zenith 60.8 54.1 15.4 44 21,5 35.2 21,9 10.6 54.5 Does each of the columns represent different variable? Explain. Report the number of groups and the total sample size Use sofrware t0 produce side-by-side boxplots of the four dara sets. Which company $ screens and monitors appear t0 have the most lead: Which company appears t0 have the least lead:"

          "1.25 Exercise 11.24 compares lead concentrations in cathode ray tubes, depending on which company manufactured the tubes themselves The same study also made comparison, depending on which company manufactured the television screens and computer monitors_ Sometimes, the CRT manufacturer is different from the television or computer manufacturer: ) The table below shows concentrations of lead for CRTs in televisions or computers manufactured by four companies.'2
Toshiba Samsung Sharp Zenith
60.8
54.1
15.4
44
21,5
35.2
21,9
10.6
54.5
Does each of the columns represent different variable? Explain. Report the number of groups and the total sample size Use sofrware t0 produce side-by-side boxplots of the four dara sets. Which company $ screens and monitors appear t0 have the most lead: Which company appears t0 have the least lead:"

Added by Steven J.

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