The Lockheed Martin X-35 was a concept demonstrator aircraft (CDA) developed by Lockheed Martin for the Joint Strike Fighter program. The X-35 was declared winner over the competing Boeing X-32 and a developed, armed version went on to enter production in the early 21st century as the F-35 Lightning II.
Answer:
See below
Step-by-step explanation:
Mean: 
Median: 14, 18, 20, 22, 30, 38 -> (20+22)/2 = 21
Mode: No mode as all elements are of equal frequency
Answer:It should be 49.365
Step-by-step explanation:
Answer:
75% of the students at the Moore school are are learning to play a stringed instrument.
Step-by-step explanation:
We are given the following in the question:
Total number of students at Moore school = 360
Number of students learning stringed instrument = 270
We have to find the percentage of the students who are learning to play a stringed instrument.
Percentage =

Thus, 75% of the students at the Moore school are are learning to play a stringed instrument.