Answer:
The age of the bones is approximately 14172 years.
Explanation:
The age of the bones can be determinated using the following decay equation:
(1)
<u>Where:</u>
N(t): is the quantity of C-14 at time t
No: is the initial quantity of C-14
λ: is the decay rate
t: is the time
First, we need to find λ:
<u>Where:</u>
t(1/2): is the half-life of C-14 = 5730 y
Now, we can calculate the age of the bones by solving equation (1) for t:
We know that the bones have lost 82% of the C-14 they originally contained, so:
Therefore, the age of the bones is approximately 14172 years.
I hope it helps you!
Answer:
Blowing on it will cool it down.
Explanation:
Air blown from peoples lungs is faster because of the small temperature difference with the hot baked potato.
Answer:
The standardized z-test statistic value is -6.3
Explanation:
Data provided in the question:
For Test H₀:
p = 0.28
n = 800
= 0.217
Standard error, SE = 0.01
Now the value of the standardized z-test statistic is calculated using the formula ;
On substituting the respective values, we get
or
z = -6.3
Hence,
The standardized z-test statistic value is -6.3