5.The following data represents the hours per week worked outside of school by 200 randomly selected night students at a community college: HoursFrequencyRelative FreqC.R.Freq0-8 20 0.10 0.10 9-16 30 0.15 0.25 17-24 50 0.25 0.50 25-32 60 0.30 0.80 33-40 30 0.15 0.95 41-48 10 0.05 1.00 Total 200 1.00 a)In the space above, determine the relative frequencies and cumulative relative frequencies. b)Sketch a relative frequency histogram, showingallhorizontaland verticallabels. c)Sketch a cumulative relative frequency ogive, showingallhorizontaland verticallabels. d)Estimate the median from the graph.
e)What percentage of the night students work 32 hours per week or less?
Without calculatingbut explaining your reasoning, which of the following is a reasonable estimate for the standard deviation?
6.Determine if each of the following data are categorical, continuous or discrete (circle one for each) a.Number of fatalities from a tsunami:
b.Time spent in traffic:
c.Number of Songs on your I-pod:
d.Your student number categoricalcontinuousdiscretee.Names of cities in California with a Walmart:
f.Price per gallon of gasoline:
Number of Courses taken in a year.
Tons of steel used by a manufacturer: