3.168 Would you rather take a multiple-choice test or a full-recall test? If you have absolutely no knowledge of the test material, you will score zero on a full-recall test. However, if you are given 5 choices for each multiple-choice question, you have at least one chance in five of guessing each correct answer! Suppose that a multiple-choice exam contains 100 questions, each with 5 possible answers, and guess the answer to each of the questions. a b What is the expected value of the number Y of questions that will be correctly answered? Find the standard deviation of Y. C Calculate the intervals 20 and μ ± 30. d If the results of the exam are curved so that 50 correct answers is a passing score, are you likely to receive a passing score? Explain.

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Q: Could you please solve c and d for me

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Q: Problem 3. Solve [2*+2³ = 10 4* +4" = 68

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Q: Please I need help with solution D

A: The random sample of size, The null and alternative hypotheses are:The test statistic is, Note:- The…