Creating the unbiased point estimate

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Reference no: EM1318607

Q1) In study of termite population in Swaziland, given data were gathered on percentages of termites that were categorized as minor workers at eight randomly selected sites.

44.2, 50.0, 48.1, 29.9, 13.5, 13.6, 24.1, 12.9

Use given data to create the unbiased point estimate of 12Ïƒ'> ²of percentage of termites that are minor workers.

Q2) A stat test consists of 10 multiple choice questions with 5 answer options.

a) When a student answers questions by guessing, determine the probability that number of his correct answers is exactly 7? (Let x be number of correct answers)

b) If total score of this test is 10 times number of correct answers, find out the expected test score of this student? (Let y be total score of this student on this test and express y in terms of x.)

c) What is the possibility that first question he answers correctly is the 5^th question on test? In other words, he misses first 4 questions and then answers 5^th question correctly.

Reference no: EM1318607

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