Read the passage and answer the following question(s). Passage 157
Directions: The line plot below shows the number of fundraiser tickets sold by students in Ms. Grossman's
class.
Number of Tickets Sold
X
X
X
X
Х
2
Х
Х
X
X
X
Х
4
Х
X
8
X
10
O
1
3
5
6
7
9
Use the data to answer any questions that follow.

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Use circumcenter theorem to solve for the given values

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.