complete) Katy had two choices of routes to get her to work she wanted to choose
ID: 3233077 • Letter: C
Question
complete) Katy had two choices of routes to get her to work she wanted to choose the route that would get her to work lastest, on average To determine which out would get her to work faster, on avorage, she randomly selected 10 days and took Route 1 on those 10 days Thon sho randomly solectod a diletent 10 days and took Route 2 on those 10 days. She recorded the time, in minutes, it took her to get from hor house to work on each of those 20 days From har dala, she constructed the 05% confidence interval for the difference in mean commuting times (Route 1-Route 2) in minutes as (-1,90 Based on this confidonce interval, which of tho lolowing s a correct statement? Choose the correct answer below O A. There is evidence at the 5% ance level to indicate that one route gets Katy to work faster, on average, since o talls between bounds otue signifc O B. confidence interval route gets Katy to work faster on average, since one boundis close to the bounds There is evidence at the 5% significance level to indicate that one since a within o C. There is not enough evidence at the 5% significance level indicate that one route gets Katy to work taster, on average, to Click to select your answer.
Explanation / Answer
Here as indicated by the confidence interval,[-1,9], it includes 0. Which means there is a possibility that the time taken on Route 2 on some day could be equal to time taken on route 1. Hence we cannot absolutely say that one route took her to work faster. Hence,
OPTION C is the correct answer. There is not enough evidence at the 5% significance level to indicate that one route takes katy to work faster, on average, as 0 falls within the bounds of the confidence interval.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.