(Answered) MATH399N: Week 2 Assignment: Histograms

Question

The speed (in mph) of randomly selected bicyclists were measured as they were approaching a hill.  The results are presented in the following histogram.

How many of those bicyclists were traveling greater than 8.5 but less than 11.5 mph as they were approaching the hill?

 

Question

Several people were asked to report the number of hours of sleep they average per night.  The results are shown in the histogram below.  How many of those people average greater than 4.5 but less than 6.5 hours of sleep per night?

Question

Given the following histogram for a set of data, how many values in the data set are greater than 10.5 but less than 12.5?

 

Question

Given the following histogram for a set of data, how many values in the data set are greater than 7.5 but less than 9.5?

Solution: 

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