Answer:
A. True it's right solids have a definite shape and volume.
If the statistical analysis shows that the significance level is below the cut off value they have set (either 0.05 or 0.01) they reject the null hypothesis and accept the alternative hypothesis
Answer:
B. I and III
Explanation:
Options I and III are correct. We are not able to view stars at all points in the night sky due to the fact that the size of the universe is infinite and the universe is made up of dust , gases, and matter. These components are able to trap starlight . Also the cosmos is constantly changing as there are interactions between bodies that make up the universe.
Answer: representative sample
Explanation:
A representative sample can be defined as a subset of the population. This sample includes subgroups that reflect the features of the larger group and are chosen for a specific purpose of study. For example, a classroom with 60 students having 30 females and 30 males, can generate a representative sample based on the gender differences.