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:
Kinetic energy is increased
Explanation:
Answer: D) The Continental army faced defeat most times they fought the British.
Explanation:
I got it right
Answer:
I am unique because I am my own person and I have my own personality.
Explanation:
According to consumerfinance.gov private student loans are not funded or subsided by the federal government private student loans are funded by banks, credit unions, state loan programs, or other types of lenders.
