THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 157

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A recent survey examined the working arrangements of married households.It was found that 88% of the households had at least one working member.In 20% of the households with the woman not working,the man also does not work.In 40% of households in which the man doesn't work,the woman also does not work.
-What is the probability that both man and woman are not working?

Understand the concept and calculation of sample variance.

Explain the importance of the t-distribution in statistical analyses.

Compare and contrast different sampling techniques.

Understand the concept of confidence intervals and their application in estimating population parameters from sample data.

---

Definitions:

Histogram

A graphical representation of the distribution of numerical data, using bars of different heights.

Representative

Term used to describe a subset or a sample that accurately reflects the larger population or dataset from which it is drawn.

Mean

The mean is the average of a set of numbers, calculated by dividing the sum of these numbers by the count of the numbers.

Observations

Data points or individual pieces of data collected through experimentation, measurement, or survey.