bFor $30-31$: Thad's Dry Cleaning is trying to improve its image with its customers. Part of this program involves providing excellent customer service along with on$-$time cleaning. A questionnaire accompanies each order asking the customer, among other things, whether they are satisfied or unsatisfied with the service. One hundred customers were sampled on each of the last seven days. The results are as follows:

What is the estimate of the process proportion of defectives for whenever it is under control $($p$-$bar$)?$

Group of answer choices

$0\mathrm{.}087$

$0\mathrm{.}108$

$0\mathrm{.}115$

$0\mathrm{.}443$