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The length of western rattlesnake are normally distributed with a mean of 60 inches and standard...

The length of western rattlesnake are normally distributed with a mean of 60 inches and standard deviation of 4 inches. What is the probability that the rattlesnake length will be equal to or less than 54.2 inches
Math   Statistics-And-Probability   
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Answer #1

Solution:

Given, the Normal distribution with,

   = 60  

= 4  

a) Find

=

=   

=

=

= ...( use z table)

( Z is the standard normal variate.Use z table to find this probability..In z table , all entries are the area to the left of z i.e. for less than.)

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