Question

For questions 42-48, use the following data on the number of houses built weekly by the Pyramid Construction Company.

Mean = 500, Median = 470, Mode = 485, Standard Deviation = 60, First quartile = 420, third quartile = 510, and 90th percentile = 468.


a) About what percent of houses built exceed 510?


b) About what percent of the houses built is less than 468?


c) In 6 weeks, what would be the total number of houses built?


d) What number of houses built represents 2 standard deviations below the mean?


e) What number of houses built represents one standard deviation above the mean?

Answer 1

a) 25%
b) 10 %
c) close to 3000 (6 times the mean)
d) 380
e) 560