PLEASE I NEED HELP ASAP THIS IS DUE AT MIDNIGHT The following histogram shows the number of days during the school year that students bought lunch.

How many total students are at the school?

What is the probability that a randomly chosen student will buy lunch between 10 and 20 times in a month?

Read the situations in the table below. then drag a graph and equation to represent each situation. indicate whether each of the relationships is proportional or non-proportional. edit : i got the right answer its attached

Which inequality has a dashed boundary line when graphed ?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.