1) A student takes a multiple-choice test that has 40 questions. Each question has 5 choices. The student did not study for the test and decides to randomly guess at each question. (Hint: The probability of guessing correctly is 0.2.) Round probabilities to four decimal places.

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I need help with these questions right here i need the answers.

1) A student takes a multiple-choice test that has 40 questions. Each question has 5 choices. The student did
not study for the test and decides to randomly guess at each question. (Hint: The probability of guessing
correctly is 0.2.) Round probabilities to four decimal places.
a )Find the probability the student gets exactly 10 problems correct.
(Show work.)
b) Calculate the mean.
c) Calculate the standard deviation.
Transcribed Image Text:1) A student takes a multiple-choice test that has 40 questions. Each question has 5 choices. The student did not study for the test and decides to randomly guess at each question. (Hint: The probability of guessing correctly is 0.2.) Round probabilities to four decimal places. a )Find the probability the student gets exactly 10 problems correct. (Show work.) b) Calculate the mean. c) Calculate the standard deviation.
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