6. Use the histograms to compare the times spent commuting for community college students who drive to school in a car with the times spent by those who take the bus. Which group typically has the longer commute time? Which group has the more variable commute time? Frequency 15 12 9 6 3 0 8 24 40 56 Time for Commute by Bus (minutes) Frequency 15 12 9 6 3 0 8 24 40 56 Time for Commute by Car (minutes) a. Comment on the shape of each distribution. b. Estimate the average commute time for each form of transportation. Which form of transportation has longer commute time. c. Estimate the spread of each distribution and compare. d. About how many students spend 16 minutes or less commuting to school in each form of transportation?
Added by Vanessa F.
Close
Step 1
Shape of each distribution: - Time for Commute by Bus: The distribution is skewed to the right, with a longer tail on the right side. - Time for Commute by Car: The distribution is roughly symmetric, with a peak in the middle. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 93 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Commute Time to Work The average commute to work (one way) is 25 minutes according to the 2005 American Community Survey. If we assume that commuting times are normally distributed and that the standard deviation is 6.1 minutes, calculate the probability that a randomly selected commuter spends for the following cases. Round the final answers to at least four decimal places and intermediate z-value calculations to two decimal places. Less than 14 minutes commuting one way
Anna D.
Commute Time to Work The average commute to work (one way) is 25 minutes according to the 2005 American Community Survey. If we assume that commuting times are normally distributed and that the standard deviation is 6.1 minutes, find the probabilities. Use a TI-83 Plus/TI-84 Plus calculator and round the answers to at least four decimal places. (b) The selected commuter spends less than 23 minutes commuting one way. P(X<23)=
Kari H.
Commute Time to Work: The average commute to work (one way) is 25 minutes according to the 2005 American Community Survey. If we assume that commuting times are normally distributed and that the standard deviation is 5 minutes, find the probabilities. Use TI-83 Plus/TI-84 Plus calculator and round the answers to at least four decimal places. Part 1 of 2: (a) The selected commuter spends more than 28 minutes commuting one way: P(X > 28)
Sanchit J.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD