A group of 40 students in a library was sampled and the type of laptop they were using was examined. It was found that 17 were using HP, 9 were using Lenovo, 5 were using Dell, 4 were using Microsoft, and 5 were using Apple.

a. Use the given information to complete the following table:

Laptop Type	HP	Lenovo	Dell	Microsoft	Apple
Frequency
Relative Frequency

b. How many degrees will the segment representing "Lenovo" have on a pie chart?

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c. What proportion of the students use HP?

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d. What is the relative frequency for Apple?

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