The distribution of scores on a recent test closely followed a Normal distribution with a mean of 22 points and a standard deviation of 4 points.
A What proportion of the students scored at least 25 points on this test?
B. What is the 31st percentile of the distribution of test scores.
C. The teacher wants to transform the test scores so that they have an
approximately Normal distribution with a mean of 80 points and a standard
deviation of 10 points. To do this, she will use a formula of the form:
new score = a +b(old score) . Find the values of a and b that the teacher
should use to transform the distribution of test scores.
D. Before the test, the teacher gave a review assignment for homework. The
maximum score on the assignment was 10 points. The distribution of scores on
this assignment had a mean of 9.2 and a standard deviation of 2.1 points. Would
it be appropriate to use a Normal distribution to calculate the proportion of
students who scored below 7 points on this assignment? Explain.

Pl help!!

function 2 has a greater rate of change than function 1

function 2 has a greater y-intercept than function 1

step-by-step explanation:

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

1 ?

step-by-step explanation:

u said 1+1+1+1+1+1+1+1+1+1+1+1*0 so ur adding 1 but then multiplying by 0 so its 0 but then u said 1*0+1 so now ur adding 1 so the answer is juan ?

~leah