15 : kerri drives $150$ miles to visit her grandmother. she starts off driving $60$ miles per hour, but then encounters road construction and has to drive $20$ miles per hour the rest of the way. if she spends the same amount of time at the faster speed as at the slower speed, then how many hours did her $150$-mile trip take in total?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.

Suppose your sat score is 2040. a college with an average sat score for admintted students of which of these would most likely be your best option?