(Solved): (SR 9.13) A landscaper wonders if he is meeting the promise he gives to his customers, that he alwa ...

(SR 9.13) A landscaper wonders if he is meeting the promise he gives to his customers, that he always mows the grass to a height of \( 3.0 \) inches or less, or if it is more than \( 3.0 \) inches. Which of the following would be true about his hypothesis test? 1. It is a two-tailed test. 11. \( H_{0} \) : Average mowing height \( \leq 3.0 \) inches. III. \( H_{\text {f: }} \) Average mowing height \( \approx 3.0 \) inches. A. IIl only B. \( l 1 \) only C. \( \| \) and 111 D. I and II E. I, II, and III