Mathematics, 03.08.2019 03:30, ayandjay01
It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. a transportation researcher wants to determine if the statement made in the advertisement is false. she randomly test drives 34 small cars at 65 miles per hour and records the braking distance. the sample average braking distance is computed as 115 feet. assume that the population standard deviation is 20 feet.
state the null and the alternative hypotheses for the test.
Answers: 3
Mathematics, 21.06.2019 21:30, Kittylover65
The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?
Answers: 2
Mathematics, 21.06.2019 23:20, kawaiiiiiiii4715
Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .
Answers: 2
It is advertised that the average braking distance for a small car traveling at 65 miles per hour eq...
Mathematics, 04.04.2020 18:25