The mean per capita income is 19,695 dollars per annum with a variance of 802,816. What is the probability that the sample mean would be less than 19565 dollars if a sample of 226 persons is randomly selected? Round your answer to four decimal places.

number one is the correct answer

step-by-step explanation: dogs and cats are mentioned, no other animals

the correct is answer is a 9-sided polygon!

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for