The length between consecutive bases on a major league baseball diamond
is 90 feet. Alvin wants to make a scale
drawing of a baseball field. If the bases
24 inches apart on his scale drawing,
what is Alvin's scale?
are
A. 1 in. = 2.5 ft
B. 1 in. = 3 ft
C. 1 in. = 30 ft
D. 1 in. = 36 ft

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.

Which of the following contains a variable?

Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7