Find the coordinate of the vertex of the following parabola algebraically! y=-4x² – 20
1 answer:
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Answer:
0.375, 0.125, 0.5
Step-by-step explanation:
given that you are taking a T/F exam and you have no idea at all about the answers to the last three questions.
Probability for correct guess = 0.5 remains constant for each of the three questions
X - no of questions is binomial with n =3 and p = 0.5
1) the probability that you guessed right on exactly one of the three questions
= P(X=1)
=
2) the probability that you guessed right on zero of the three questions
=
3) the probability that you guessed right on at least two of the questions
=