Occasionally, warning flares of the type contained in most automobile emergency kits fail to ignite. A consumer

Question:

Occasionally, warning flares of the type contained in most automobile emergency kits fail to ignite. A consumer group wants to investigate a claim that the proportion of defective flares made by a particular manufacturer is much higher than the advertised value of 0.1. A large number of flares will be tested, and the results will be used to decide between H0: p = 0.1 and Ha: p > 0.1, where p represents the actual proportion of defective flares made by this manufacturer. If H0 is rejected, charges of false advertising will be filed against the manufacturer.
a. Explain why the alternative hypothesis was chosen to be Ha: p > 0.1.
b. Complete the last two columns of the following table.