Which statement describes a scientific theory?
A theory states how something behaves wit...
Which statement describes a scientific theory?
A theory states how something behaves without explaining why.
A theory is a proven fact that cannot be changed.
A theory changes based on new observations and testing.
A theory is based on a single hypothesis or observation.
Answers: 2
Physics, 21.06.2019 18:10
An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.
Answers: 2
Physics, 22.06.2019 08:30
An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?
Answers: 1
Physics, 22.06.2019 09:30
1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.
Answers: 1
Physics, 22.06.2019 15:30
1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?
Answers: 1
Business, 06.10.2019 17:10
Computers and Technology, 06.10.2019 17:10
English, 06.10.2019 17:10
History, 06.10.2019 17:10
History, 06.10.2019 17:10
History, 06.10.2019 17:10
English, 06.10.2019 17:10
History, 06.10.2019 17:10
Mathematics, 06.10.2019 17:10
Mathematics, 06.10.2019 17:10
History, 06.10.2019 17:10
History, 06.10.2019 17:10