Plants play an essential role in _____
A) ?slowing down the wind
B) ?producing oxygen
C) ?producing food
D) ?All of the above
D
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A land-grant university located in the Midwest has an entering freshman class of 1 522 students. A random sample of 150, or approximately 10 percent, of the entering first- year students’ cumulative grade points were recorded. Academic standards require each student to have a first-year grade average of 1.5 or better to return for the sophomore year and 3.5 or better to be eligible for the Dean’s list. The grade point averages (GPA) below have been partially grouped.
(a) Determine the mean grade point average and standard deviation for the sample.
(b) Group the data into equal classes and construct a frequency distribution table.
(c) Draw a histogram of the distribution.
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Which of the following are the stages an insect goes through in a gradual metamorphosis?
a. Egg, larvae, pupa, adult c. Egg, nymph, adult b. Egg, adult d. Egg, larvae, nymph, naiad, adult
The actual part surface or feature used to establish a datum is a:
A. Datum target B. Specified datum C. True position D. Datum feature
An example of a pressure vessel is ____.
A. a small ship containing refrigerant cylinders B. the compressor in a refrigeration unit C. a cylinder containing refrigerant D. a portable dolly