For Exercises perform these steps.

a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.

The percentages of on time arrivals for major U.S. airlines range from 68.6 to 91.1. Two regional airlines were surveyed with the B following results. At α = 0.01, is there a difference in B proportions?

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No. of flights No. of on-time flights Airline A 300 213 Airline B 250 185