The standard deviation of the average age of a breed of dog is said to be 3.69.
<h3>What is the standard deviation about?</h3>
Note that we take:
- x = dog age has mean 19.5
- Unknown standard deviation.
Hence:
z = (x - mean) /SD is distributed N (0,1) - mean o standard deviation 1 (standard normal)
Since 20% of dogs are known to be older than 22.6 years:
So 22.6 years is said to be 80th percentile,
Since z matching to 80th percentile (using the standard normal table) s is <em>0.84.</em>
Then one need to plug z, x which is = 22.6
mean = 19.5 into the stated z equation:
Hence,
0.84 = (22.6 - 19.5)/SD
SD = (22.6 - 19.5)/0.84
= 3.69
Learn more about standard deviation from
brainly.com/question/475676
#SPJ1
Answer:
Explanation:
Both ranges <em>ABUT </em> at their <em>eastern </em>or E.N.E
I'd like to follow up with an <em>ANTECEDENT </em>question for the reporter
It is his sacred duty and his private interest to <em>BEGET</em> children and to train them to take his place
When you use a baseball bat to beat someone until he is unconscious, this is an example of when you <em>BLUDGEON</em> him.
Her thoughts were interrupted by a <em>CACOPHONY </em>of a sound, I heard a voice call out in agony.
The harbour is <em>CAPACIOUS</em> and secure, with a sufficient depth of water for the largest vessels.
Music is a means of <em>CATHARSIS</em> for her.
Her <em>COTERIE</em> of fellow musicians His films are admired by a small <em>COTERIE</em> of critics.
Only a <em>DEMAGOGUE </em>could persuade so many people to rebel against authority.
Even his misanthropy is only an inverted form of social solicitude. Her books are a sovereign remedy for depression and misanthropy.
C i’m not too sure but hope i helped<<<333
Tree diagrams display all the possible outcomes of an event. Each branch in a tree diagram represents a possible outcome. Tree diagrams can be used to find the number of possible outcomes and calculate the probability of possible outcomes.
