Suppose all 100 students of a statistics class were asked whether they are in ta

Question

Suppose all 100 students of a statistics class were asked whether they are in taking midterm exam. Two Way Classification of students Responses as follow. What the P(male| in favor)? A) 0.18 B) 0.68 C) 0.78 D) 0.21 Consider an experiment in which you roll three six sided fair dice and record the number of up. The only possible outcomes are zero 4s is A) 0.005 B) 0.579 C) 0.347 D) 0.069 A fair coin is tossed 5 times, and a head (H) or a tail (T) is recorded each time, What is the of P(A) = (exactly one head in 5 tosses)? A) 1/32 B) 1/25 C) 1/5 D) 5/32 Assume that 75% of the households in Michigan have incomes of $24, 375 or below. Given information, it is certain that the mean household income is less than $24, 375 A) True B) False The following five-number summary for a sample of size 500 were obtained: Minimum Q1 = 1200, Q2 = 3600, Q3 = 4800, and Maximum = 4, 950. Based on this information, if you construct a box and whisker plot, the value 215 is considered an outlier. A) True B) False Which of the following randomly selected measurements, x, might be considered a (i.e., an unusual measurement) if it was selected from the given population? A) x = 0 from a population with mu = 0 and 6=2 B) x = -5 from a population with mu = 1 and 6 = 4 C) x = l from a population with mu = 0and 6 = 2 D) x = 7 from a population with mu = 3 and 6 = 2 E) x = 4 from a population with mu = 0 and 6 = 1

Explanation / Answer

Q.36 Total person in favour = 19

Total male out of the person in favour = 15/19 = 0.78

Q.37 Total possibities = 63

so Pr( zero fours) = (5/6)3 = 0.579

Q.38 P(A) = P(Exactly one head in 5 tosses) = 5C1 (0.5)5 = 5/32

Q.39 FALSE, it is not 100% certinty that mean would be less than $24,375.

Q.40. Yes, 215 is an outlier here . Difference is too high between minimum and First Quartile

Q.41 (E) as mean = 0 and standard deviation =1 but value is equal to 4 which is 4 standard deviation away so very less probability.

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