Statistics Solutions

(Solution Library) A mathematics professor claims that the variance on placement tests when the students use scientific calculators will be larger than

Question: A mathematics professor claims that the variance on placement tests when the students use scientific calculators will be larger than the variance on placement tests when the students use graphing calculators. The data is given below. Follow the guidelines on page 536 in our textbook, and test the professor’s claim using the F-test with = 0.10.

Scientific calculator group Graphing calculator group
n 1 = 40 n 2 = 50
\[{{s}_{1}}^{2}\] = 37 \[{{s}_{2}}^{2}\] = 32

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