Answer: 0.9961
Step-by-step explanation:
Given: Total choices to each question = 4
So, the probability that an answer is correct = 
Total questions = 20
i.e. n= 20
Let x be the binomial variable that represents the number of correct answers.
So, the probability that the student has at least 10 correct answers.

[By using cumulative binomial table]
Hence, the probability that the student has at least 10 correct answers = 0.9961
Answer:
You divide the numerator by the denominator (top number by bottom number)
Answer:
B (2,-4)
Step-by-step explanation:
V = ⁴⁄₃πr³ is the formula for the volume of a sphere
Answer:
it's C
Step-by-step explanation: