# What is the key feature of probability sampling?

The key feature is that each sample of the given size has the same probability of being selected as the sample. Equivalently, each unit in the population has the same probab (MORE)

# A sample space consists of 10 separate events that are equally. what is the probability of each?

  I believe you mean to say, equally probable. By stating they are separate events, I assume that they are independent and that there is a single unique outcome to each ev (MORE)

# What is a sample selected in a such a way that each member of the population has an equal probability of being included?

  Answer   This is called a random sample. 

# What is a non probability sample?

  A sample of a population that is based on factors other than randomness.

Advantages and disadvantages of probability sampling: Advantages: Since it is done at random, the whole process is unbiased. This is good to use in smaller populations, of c (MORE)

# What is the sample space for choosing a letter from the word probability?

11 * * * * * No, on two counts. The sample space is the possible outcomes of the experiment, not the NUMBER of possible outcomes. And, as far as this experiment is concerned, (MORE)

# Concept of Probability sampling and chi square test?

  A probability sampling method is any method of sampling that utilizes some form of random selection.   See:   http://www.socialresearchmethods.net/kb/sampprob.php (MORE)

# What are the disadvantages of non probability sampling?

It is quite likely that the sample is not representative of the population and so while statistical conclusion may be valid for the sample, they may not apply to the populatio (MORE)

# What is the primary characteristic of a probability sample?

In the context of a sample of size n out of a population of N , any sample of size n has the same probability of being selected. This is equivalent to the statement that (MORE)
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# What is the probability of a sample mean being less than 12752 or greater than 12755?

sample n equals 37 sorry and if you could write the equation that  would be helpful