The lengths of salamanders have a normal distribution with mean 15cm, and standard deviation 2cm. What is the probability a salamander has length less than 13cm?

(provide your answer as a decimal)

0.1587

Step-by-step explanation:

So we were given;

x = 13

Mean = 15

Standard deviation = 2

We will be using the Z score formula

Z = (x - mean) / standard deviation

So z = ( 13 - 15 ) / 2

z = - 2/2

z = -1

So we check for -1 in the z table

z = 0.1587

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x