class cumulative relative frequency 150 up to 200 018 200 up

class                             cumulative relative frequency

150 up to 200                     0.18

200 up to 250                     0.21

250 up to 300                     0.61

300 up to 350                     1.00

a-1: Construct a relative frewquency distribution. (round your answer to 2 decimal places)

class                            relative frequency

150 up to 200                     ________

200 up to 250                     ________

250 up to 300                     ________

300 up to 350                     ________

total                                    _________

a-2: What percent of the observations are at least 250 but less than 300?

percent of observations   _______

Solution

40% of the observations are atleast 250 but less than 300