Which could likely be the variables represented in the scatter plot shown?
A. The population of a city and the number of houses in the city.
B. The number of buildings in a city and the number of trees in the city.
C. The number of cars in a city and the pollution level of the city.
D. The population of a city and the number of letters in the city's name.

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).

The table showed price paid per concert ticket on a popular online auction site. what was the average price paid per ticket