9. Scores on the SAT form a normal distribution with a mean of 500 and a standard deviation of 100. a.)What is the minimum score necessary to be in the top 20% of the SAT distribution?

b.) Find the range of values that defines the middle 80% of the distribution of SAT scores?

10. For a normal distribution, find the z-score that separates the distribution as follows:

a.) Separate the highest 30% from the rest of the distribution?

b.) Separate the lowest 40% from the rest of the distribution?

c.) Separate the highest 75% form the rest of the distribution?

i just took the test, the correct answer is .. 31.5 in.

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step-by-step explanation:

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v