Statistics for Business
Calculate the marginal frequencies for the following contingency table and find the expected frequency for each cell, assuming independence.
Type AType BGroup 11510Group 22520\(\begin{array}{ccc}\) & \(\text{Type A}\) & \(\text{Type B}\)\\ \(\text{Group 1}\) & 15 & 10\\ \(\text{Group 2}\) & 25 & 20\\ & & \(\end{array}\)
A contingency table shows the number of adults (in units of thousands) in a city by employment status and level of education:
What percentage of adults (i) are employed and have some college, (ii) are unemployed, and (iii) have no diploma?