Question: A calculus student takes a 20 question multiple choice test with 4 answers choices for each question . Find the mean and standard deviation of

A calculus student takes a 20 question multiple choice test with 4 answers choices for each question . Find the mean and standard deviation of the number of questions she gets correct.

A quiz consists of 8 questions each with 5 possible answers. If the student guesses at the answer to each question. Find the mean for the number of correct answers

A 37 year old individual purchases a life insurance policy of 92,000 for an annual payment of $250. Based on a insurance report the probabilty that an individual is in a life threatening accident this year and survives is .999063. Find the expected value of the policy for the insurance company

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