Chapter 1, Problem T1.9SPT

To determine

To find : the conclusion that seems to be supported by the data

Answer to Problem T1.9SPT

b. Small companies appear to have a higher response rate than medium or big companies

Explanation of Solution

Given information : Table showing the relationship between the response rate and the size of the business

1. False, as number of small companies is equal to number of large companies.
2. True, small companies have a higher rate than medium or big companies. {∵125>81,125>40
3. Number of companies who respond =125+81+40=246
Number of companies who did not respond =75+119+160=354

So,

Number of companies who respond ≠ Number of companies who did not respond

The given statement is false

4. Total number of companies 200+200+200=600
Number of companies who respond =125+81+40=246 < 1/2(600) =300

So, the statement is false.

5. Number of small companies who respond = 125
Number of medium and large companies who respond = 81+40=121≠125

So, the given statement is false.

Therefore, only conclusion b. is supported by the data.