# The lengths of a certain species of fish were found to be normally distributed. The mean length is 93 cm with a standard deviation of 12 cm. In a school of 360 of these fish, about how many would be longer than 81 cm?

##### 1 Answer

Apr 21, 2017

Number of fish having a length greater than 81 cm out of 360

#### Explanation:

Given -

Mean length of fish

SD

Number of fish having a length greater than 81 cm out of 360.

Find the value of

#z=(x-barx)/sigma=(81-93)/12=(-12)/12=-1#

Find the Area between

Area between

Area between[

Number of fish having a length greater than 81 cm out of 360