00:01
In this problem, we have given that, suppose bank of america would like to investigate if the credit score and income level of an individual are independent of one another.
00:13
Bank of america selects random samples of 400 adults and asked them to report their credit score range and their income range.
00:25
So, this is the contingency table represent these results.
00:30
So, income is less than $50 ,000, so less than $650, that means 20, between 65 and 70, this is 30, more than 750 is 24, and so on.
00:41
These are the t -e rules.
00:43
Now, the expected number of individuals with income between 50 ,000 to 1 lakh, so this would be 100 ,000 we can say, say from $50 ,000 to $100 ,000.
01:03
Credit score less than 650 is.
01:08
So, we have to find the expected value.
01:11
So, we can say this would be the table.
01:16
Let me show you, we have made a table...