1. An airline claims that 90% of lost luggage is recovered and delivered to its owner within
24 hours. A researcher is skeptical of this claim and believes this percentage is too high.
She writes her null hypothesis as being "p>0.90." What is wrong with this?
A. Nothing is wrong.
B. The null hypothesis should be p < 0.90.
C. The null hypothesis should be p = 0.90.
D. The null hypothesis should be two-sided.
E. We cannot determine what might be wrong without knowing more details about
the sample size and the sample proportion.
