It is estimated that about 99.7% of observations are expected to fall between 3 standard deviations below and above the mean. A normal curve. The x-axis has values mu minus 3 sigma, mu minus 2 sigma, mu minus sigma, mu, mu + sigma, mu + 2 sigma, mu + 3 sigma. Between mu minus 3 sigma and mu minus 2 sigma is question mark. Between mu minus 2 sigma and mu minus sigma is 13.5 percent. Between mu minus sigma and mu is 34 percent.

What percent of observations are expected to fall between 2 and 3 standard deviations above (or below) the mean?

5%
4.7%
2.5%
2.35%

Ithink b hope that

If you are talking about typical sand you would find at the beach or in a river bed here on earth, there are some differences. i would say the first biggest difference is in composition and mineral make up. although the moon is largely made of the same materials as earth’s mantle and surface, the moon experiences very little weathering (no liquid water and virtually no atmosphere). “earth” sand is typically composed mostly of quartz grains. this is because quartz is highly resistant to both physical and chemical weathering. most of the other minerals originally with the quartz are broken down into fine clay and carried away, chemically eroded/ dissolved, or some combination of the two. this usually leaves only the quartz behind, and so most of the time when you see/think of sand, you are talking about quartz. without these weathering mechanisms on the moon, the “sand” (which is likely more silt or clay sized grains anyways) would consist of mostly other minerals like anorthosite, olivine, and proxene.

: )

Yes, you can get ap exam prep books that correspond to the exam you will be taking. i honestly think the ap biology exam was one of the easier exams to take.

Prohibited for an underage student to be in the presence of any other person legally or illegally, consuming or selling alcoholic beverages; i think this is a correct answer