The Ministry of Education, Science and Culture conducted a study to investigate whether the length of schooling affects income. Participants' schooling was either classified as short or long. Participants' income was classified as high or low. A chi-square test was used to examine whether there was a difference in the income of individuals who had been in school for a short or long time.

Lengt of school = Short - High income 80 - Low income 120

Length of school = Long - High income 140 - Low income 40

a) Is a chi-square parametric or a non-parametric test?

b) What is the null hypothesis in the study? Enter the answer.

c) What was the total number of participants in the study?

d) What is the test size?

e) What are the degrees of freedom?

f) What percentage of participants with a short schooling have a high income? %.

g) What percentage of low-income participants have long schooling? %.

i) What is the overall result of the chi-square test? Select in the drop-down box and enter the answer.

there is a relationship between the length of schooling and income. Individuals with an education are more likely to have an income.