In your biology class, your final grade is based on several things: a lab score, score on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 30% of your total grade, each major test is worth 22.5%, and the final exam is worth 25%. Compute the weighted average for the following scores: 92 on the lab, 85 on the first major test, 90 on the second major test, and 84 on the final exam. Round your answer to the nearest hundredth.

Group of answer choices

89.98

85.58

87.58

87.98

86.85

The Grand Canyon and the Colorado River are beautiful, rugged, and sometimes dangerous. Assume there is a physician at the park clinic in Grand Canyon Village. Suppose the physician has recorded (for a 5-year period) the number of visitor injuries at different landing points for commercial boat trips down the Colorado River in both the Upper and Lower Grand Canyon. Compute a 5% trimmed mean for Upper Canyon and Lower Canyon. Round your answer to the nearest thousandth.

Upper Canyon: Number of injuries per Landing Point Between

North Canyon and Phantom Ranch231134912313

Lower Canyon: Number of injuries per Landing Point Between

Bright Angel and Lava Falls111109102133011221

Group of answer choices

The 5% trimmed mean for Lower Canyon is 3.333 and for Upper Canyon is 5.583.

The 5% trimmed mean for Lower Canyon is 2.727 and for Upper Canyon is 4.786.

The 5% trimmed mean for Lower Canyon is 2.636 and for Upper Canyon is 3.857.

The 5% trimmed mean for Lower Canyon is 3.222 and for Upper Canyon is 4.417.

The 5% trimmed mean for Lower Canyon is 4.417 and for Upper Canyon is 3.222.