Question

the accompanying data are 45 commute times to work in minutes for workers of age 16 or older in chicago. construct a frequency - distribution. use a class width of 15 minutes and begin with a lower class limit of 0 minutes. do the data amounts appear to have a normal distribution? examine the data and identify anything appearing to be unique. time (minutes) frequency 0 - 14 5 15 - 29 15 30 - 44 13 45 - 59 8 60 - 74 3 75 - 89 1 (type whole numbers.) do the data amounts appear to have a normal distribution? a. no, because the frequencies start at a maximum and become low, and because the distribution is not symmetric. b. yes, because the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, and the distribution is approximately symmetric. c. no, because while the distribution is approximately symmetric, the frequencies start at a maximum and become low. d. no, because while the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, the distribution is not symmetric.

Explanation:

Step1: Recall normal - distribution properties

A normal distribution is symmetric, frequencies start low, peak at the middle, then decrease.

Step2: Analyze given data

Frequencies start at 5, peak at 15, then decrease. But distribution is not symmetric.

Answer:

A. No, because the frequencies start at a maximum and become low, and because the distribution is not symmetric.