Answer: t= -1.60
Explanation:
Let
be the population mean weight of pigs.
As per given , we have


Sample size : n= 16
Sample mean =
Sample standard deviation : 
<em>Since the population standard deviation is not known so the test is a</em><em> t-test.</em>
Test statistic for population mean : 
(Substitute all the values.)
Hence, the value of the test statistic needed to test the null hypothesis : t= -1.60
Political opposition is one of the current factors affecting extraction of resources from the rainforest.
Answer:
In their Mitochondria.
Explanation:
Organisms contain cells. Each cell has organelles (which are the organs of the cells). There is an organelle called mitochondria which is known as the powerhouse of the cell as it create the neccessry ATP energy.
Answer:
concentric contraction
Explanation:
A concentric contraction causes muscles to shorten.