<h3>
Answers: Choice B and Choice C</h3>
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Explanation:
The symbol 
or mu represents the population mean, which is a parameter.
The symbol 
or sigma represents the population standard deviation, which is also a parameter. The same goes for the symbol p, without any hat on top, as it is the population proportion.
If something represents a population data item, then it's automatically a parameter. It might help to think both words "population" and "parameter" start with the letter P.
Based on those previous paragraphs, we can rule out choices A, D and E. Those three items are parameters. This leaves <u>choices B and C</u> as our final answers.
or xbar is a sample statistic, and it represents an estimate of the population mean. Similarly, 
or p-hat is the sample proportion and it represents an estimate of the population proportion. These are considered unbiased estimators.
Another example of an unbiased estimator is the variable s which represents the sample standard deviation and it estimates the value of sigma. All of these estimators have one thing in common: they are based on a sample, which in turn tries to predict what the corresponding population value is. In other words, the statistic's job is to estimate the parameter.
Below is a reference table for all of the items mentioned.
The environment is good but kind bad because trees is on fire ice in Antarctica is melting so it’s kinda bad
Answer: The son is 1 year old and the father is 27 years old.
Explanation: Let’s call the sons age x and the fathers is y. You have the equations x+26=y and 3(x+8)=y=3x+24. So you could say that (3x-24)-(x+26)= z -z. So 2x-2=0. Add 2 to both sides and get 2x=2. x = 1 so the son is 1 year old
Answer: more protons are present in the atomic nucleus
Answer:
Need/needn't I call Jhon just now for he is coming tomorrow to visit me.
