The loudest animal on Earth is the blue whale. Blue whales can emit sound with an intensity of 106.8 watts/meter. The equation B = 10 log() relates the sound level, B, in decibels (dB), of a nolse with an intensity of I to the smallest sound intensity that can be heard
by the human ear, 10 (approximately 1 x 10–12 watts/meter?).
Based on this information, which value is closest to the sound level, in decibels, of the vocalizations of a blue whale?
OA.
240 dB
OB.
1,000 dB
Ос.
140 dB
OD
100 dB

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.

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok

How would you find the height of points on the circle? the topic is trigonometry.