a states legislature was considering the funding of its parks system. as part of the considerations, a study…

a states legislature was considering the funding of its parks system. as part of the considerations, a study was done to look at the number of unique visitors to a selection of the states parks over the memorial day weekend. the histogram below summarizes the data. use the histogram to answer each of the questions.\n(a) what is the class width?\n(b) according to the histogram, what is the total number of parks?\n(c) how many parks had from 420 to 569 unique visitors?

a states legislature was considering the funding of its parks system. as part of the considerations, a study was done to look at the number of unique visitors to a selection of the states parks over the memorial day weekend. the histogram below summarizes the data. use the histogram to answer each of the questions.\n(a) what is the class width?\n(b) according to the histogram, what is the total number of parks?\n(c) how many parks had from 420 to 569 unique visitors?

Answer

Explanation:

Step1: Calculate class width

For the first - class interval 120 - 269, class width = 269 - 120=149.

Step2: Find total number of parks

Sum the frequencies of all intervals. Frequencies are 9, 3, 4, 9. Total number of parks = 9 + 3+4 + 9=25.

Step3: Determine number of parks in 420 - 569 interval

The frequency of the 420 - 569 interval is 4.

Answer:

(a) 149 (b) 25 (c) 4