The average ACT score follows a Normal distribution, with a mean of μ = 21.1 and a standard deviation of σ = 5.1. What is the probability that the mean IQ score of 50 randomly selected people will be more than 23?

0
1
0.9958
0.3547
0.0042

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

1,2,4,5,10,11,20,22,44,55,110,220

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