Aman who moves to a new city sees that there are two routes he could take to work. a neighbor who has lived there a long time he tells him route a will average 5 minutes faster than route b. the man decides to experiment. each day he flips a coin to determine which way to go, driving each route 10 days. he finds that route a takes an average of 49 minutes, with standard deviation 2 minutes, and route b takes an average of 50 minutes, with standard deviation 4 minutes. histograms of travel times for the routes are roughly symmetric and show no outliers. (alpha =0.05)

find a 95% confidence interval for the difference between the route b and route a commuting times. ( , )

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

Choose the right classification of 5x + 3x^4 - 7x^3 + 10 by number terms and he degree 1. third degree polynomial 2. fourth degree polynomial 3. sixth degree polynomial 4. first degree binomial

Which situation could best be represented by this linear equation? 24x + 38y = 520 > if x represents the number of bracelets and y represents the number of rings, there were 24 more bracelets sold than rings. the total sales were $520. if x represents the number of bracelets and y represents the number of rings, there were 38 more bracelets sold than rings. the total sales were $520. if x represents the number of bracelets sold at $24 each and y represents the number of rings sold at $38 each, the total sales were $520 if x represents the number of bracelets and y represents the number of rings, there were 520 bracelets and rings sold. bracelets were $24, and rings were $38. e