Help with probability and statistics!?

can you explain these questions to me plz


statistics is challenging for me and im kind of struggling


List the population and the sample:


1.A study of 33,000 infants in italy was conducted to find a link between a heart rhythm abnormality and sudden infant death syndrome





2. A survey of 500 women found that more than 56% are the primary investor in their household





determine whether the numerical value is a parameter or a statistic:


3.the average annual salary for 35 of a company's 1200 accountants is $57,000.





thank you and bless you

Help with probability and statistics!?
In general, the population is the entire group about which you want to make a statement. The sample is the particular set of individuals you look at to decide what that statement is.





So in your first item, you are looking at 33,000 infants. Presumably you want to make a statement about all infants.





In (2), you are looking at 500 women and you want generalize what you find about them to make a statement about all women.








This distinction between parameter and statistic is similar. The parameter is a feature of the population; it is almost always impossible to measure every member of the population, so the value of the parameter must be estimated. We estimate the parameter by starting with a statistic-- a measured value from some subset of the population (in particular, a sample).





So in your third question, you have a sample of 35 accountants from a population of some 1200 accountants. Among that sample, you have information from all the people, giving you a statistic (average salary, in this case).





Good luck.