Answer:
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Answer:
The first one..
Step-by-step explanation:
Answer:
isosceles trapezoid
Step-by-step explanation:
honestly not 100% sure but it seems the most specific
Answer:
The expected value of lateness
hours.
Step-by-step explanation:
The probability distribution of lateness is as follows:
Lateness P (Lateness)
On Time 4/5
1 Hour Late 1/10
2 Hours Late 1/20
3 Hours Late 1/20
The formula of expected value of a random variable is:

Compute the expected value of lateness as follows:


Thus, the expected value of lateness
hours.