Laptop use in middle school. Many middle schools have initiated a program that provides every student with a free laptop (notebook) computer. Student usage of laptops at a middle school that participates in the initiative was investigated in American Secondary Education (Fall 2009). In a sample of 106 students, the researchers reported the following statistics on how many minutes per day each student used his or her laptop for taking notes: , s = 19.5
a. Compute the interval, .
b. Explain why the distribution of laptop usage for taking notes for these 106 students cannot be symmetric.
c. Given your answer to part b , what percentage of the 106 students have laptop usages that fall within the interval?
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