hailee24
02.11.2020 •
Mathematics
3. Consider an advanced statistics class which consists of 20 Statistics majors, 15 Mathematics majors, 10 Computer Science majors, and 5 Electric Engineering majors. Suppose a random sample of size 10 is drawn from this course without replacement. What is the probability that the sample contains 5 Statistics majors, 3 Mathematics majors, 2 Computer Science majors, and 0 Electric Engineering majors?
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Ответ:
0.0309
Step-by-step explanation:
Given: In advanced statistics class, there are 20 Statistics majors, 15 Mathematics majors, 10 Computer Science majors, and 5 Electric Engineering majors.
Total = 20+15+10+5 =50
Number of combinations of selecting r things out of n =
The number of ways to choose a sample of 10 put of 50=
Number of ways to choose 5 Statistics majors, 3 Mathematics majors, 2 Computer Science majors, and 0 Electric Engineering majors =
Required probability =
Hence, the required probability = 0.0309
Ответ:
1,800 ft
Step-by-step explanation:
Rebecca will walk in the pattern of a regular polygon with 'n' sides and internal angles of 160 degrees (180 at a straight line - 20 degrees from each turn).
The equation that describes the internal angle of a regular polygon is:
For A = 160 degrees:
If each side is 100 ft long, the total distance that Rebecca has walked is:
She walked 1,800 ft.