(4 points) An instructor gives his class a set of 11 problems with the information that the next quiz will consist of a random s
1 answer:
Answer:
6/11 = 0.545
Step-by-step explanation:
We use combination theory. The total number of ways in which 5 questions can be selected out of 11 is ¹¹C₅ since it is a random selection and order doesn't matter. The total number of ways in which the student can answer 5 questions with him knowing 10 out of 11 is ¹⁰C₅. Since it doesn't matter the order of questions he can answer out of the 11, we do not do ¹¹C₁₀ which is the number of ways he can choose correctly out of the 11 questions. The probability that he will get the answer right = event space/ sample space = ¹⁰C₅/¹¹C₅ = ÷
= 6/11 = 0.545
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Answer: A. No; the graph fails the vertical line test.
Step-by-step explanation:
As we can see that the vertical lines crosses the graph more than once , Hence it is not a function.
To check if given graph is a function or not , we draw random vertical lines on the graph, if the vertical lines crosses the graph only once then It is a function.
But if any vertical line crossed the graph more than once ,that is at more than one point, than it is not a function.
As we can see here that Vertical lines crosses the graph more than once, at more than one point ,
Hence it is not a function.
