The distribution ages for students at the state college is positively skewed with a mean of m 5 21.5 and a
the standard deviation of s 5 3.
a. What is the probability of selecting a random sample of n 5 4 students with an average age greater than 23? (Careful: This is a trick question.)
b. What is the probability of selecting a random
sample of n 5 36 students with an average age
greater than 23?
c. For a sample of n 5 36 students, what is the probability that the average age is between 21 and 22?

area = length x width

length = 2 x width

32 = 2 x width x width

32 = 2 x width^2

36 = width ^2  

width = 6

length = 12

area is 32

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36

step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

50.6

step-by-step explanation:

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl