Mathematics, 20.01.2021 06:30, dpazmembreno
A test consists of 10 questions. Each question has five options (A-E). To pass the test a student must answer at least 7 questions correctly.
a. How many ways you can get 7 correct answers?
b. If a student guesses on each question, what is the probability that the student will get 5 correct answers?
c. If a student guesses on each question, what is the probability that the student will pass the test? 4
d. Find the mean and standard deviation?
e. If a student guesses on each question, is it usual for him/her to get 5 correct answers? Explain your answer.
Answers: 3
Mathematics, 21.06.2019 16:20, bestballer7095
Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais
Answers: 2
Mathematics, 21.06.2019 21:00, leannaadrian
2x minus y equals 6, x plus y equals negative 3
Answers: 1
Mathematics, 22.06.2019 01:20, lauretta
Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18 }, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.
Answers: 2
A test consists of 10 questions. Each question has five options (A-E). To pass the test a student mu...
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