This is my tutorial question but i do not understand the meaning of question B and C..Please help me..

Suppose the funnel experiment was conducted 17 times with the following results(in sec.):

5.3, 6.2, 4.8, 6.4, 5.2, 5, 6.7, 4.2, 4.3, 6.8, 4.4, 4.8, 7.1, 5.6, 6.6, 5, 4.3

a.) What proportion of outcomes are less than or equal to 5.0 seconds?

Mr F says: Where are you stuck here? How many values are there? How many are less than or equal to 5 seconds? Do you know how to find a proportion?
b.) What proportion of outcomes are within one standard deviation of the

mean?

c.) What proportion of outcomes are within two standard deviations of the mean?

Thank you