B) The alcohol level in a burette is 30cm3. If 55 drops of alcohol fall from the burette and the average radius of the drop is 35mm3, what is the final reading of the alcohol
level in the burette.

Which would not reduce the amount of green house gasses in the air

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.

Iwill give brainliest if you answer right : )