Sanjay was given some pH paper to test his three substances. You can see the results in the table above. Should Sanjay amend his conclusion? If yes, how?

A) No. Sanjay's original conclusion is accurate.

B) Yes. Sanjay tested three acidic substances one pH 3 and two pH 6.

C) Yes. Sanjay has tested three substances with three different pH's.

D) Yes Sanjay tested two substances that are really neutral and one that is acidic.

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.