a) Incorrect. This implies certainty.

b) Incorrect. Different samples will give different results. Many fewer than 95% will have 88% on-time orders.

c) Incorrect. The interval is about the population proportion, not the sample proportion in different samples.

d) Incorrect. In this sample, we know 88% arrived on time

e) Incorrect. The interval is about the parameter, not about the days.

b) Incorrect. Different samples will give different results. Many fewer than 95% will have 88% on-time orders.

c) Incorrect. The interval is about the population proportion, not the sample proportion in different samples.

d) Incorrect. In this sample, we know 88% arrived on time

e) Incorrect. The interval is about the parameter, not about the days.