Idrk but i do know that it is on answer.com
Então em 20 anos a terra valeria R$13000
1%de 65000 é 650
650x20= 13000
Answer:
Yes
Explanation:
The z score is a score used in statistics to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

For a normal distribution with a mean of μ and standard deviation σ, For any sample size (n) drawn from this population, the sample mean is normally distributed, with mean
and standard deviation
.
Hence given that a mean of μ = 20.6 years and standard deviation σ = 5.3 years, for a sample size of 100:
mean
and standard deviation
.