MA 3110 STATS CHAPTER 7

Question 1

A ___ is a single value or point used to approximate a population parameter.

Answer 1

Point estimate

Question 2

A __ (or ___) is a range or ___ of values used to estimate the true value of a population parameter. It is sometimes abbreviated as CI.

Answer 2

Confidence interval or interval estimate

Interval

Question 3

The ___ is the probability 1 - a (often expressed as the equivalent percentage value) that the confidence interval actually does contain the population parameter, assuming that the estimation process is repeated a large number of times.
It is also called the degree of ___ or ___ coefficient.

Answer 3

Confident Level
Degree of Confidence
Confidence coefficient

Question 4

A ___ is the number on the borderline separating sample statistics that are likely to occur from those that are unlikely to occur. The number za/2 is a critical value that is a z score with the property that it separates an area of a/2 in the right tail of the standard normal distribution.

Answer 4

Critical Value