Question

. A 1980 study was conducted whose purpose was to compare the indoor air quality in offices where smoking was permitted with that in offices where smoking was not permitted. Measurements were made of carbon monoxide at 1:20p.m. in 40 work areas where smoking was permitted and in 40 work areas where smoking was not permitted. Where smoking was permitted, the mean CO level was 11.6 parts per million (ppm) and the standard deviation CO was 7.3 ppm Where smoking was not permitted, the mean CO was 6.9 ppm and the standard deviation CO was 2.7 ppm. Assume the true variances of CO were different in the two types of working environments.

(b) Report a p-value for your test.

Answer 1

from above p value =0.0005

( please try p value=0.0006 if this comes wrong and revert)