Managerial Statistics Practice test


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1) An experiment consists of making 80 telephone calls in order to sell a particular insurance policy. The random variable in this experiment is a
2) Assuming that Birthdays are uniformly distributed through out the week, the probability that two strangers passing each other on the street were both born on Monday is
3) If you are told a population has a mean of 25 and a variance of 0, what must you conclude?
4) Suppose that a quiz consists of 20 True-False questions. A student hasn't studied for the exam and will just randomly guesses at all answers (with True and False equally likely). How would you find the probability that the student will get 8 or fewer answers correct?
5) Which one of these variables is a binomial random variable?
6) Let A and B be events such that P (A) = 0.7 and P (B) = 0.9. Calculate the largest possible value of P (A ∪ B) − P (A ∩ B).
7) TATA Company stocks three brands: brand A; brand B and brand C. 40% are Brand A, 35% are brand B and 25% are brand C. The percentage of defective are 2% of brand A, 1% of brand B and 3% of brand C. If the company selects a product and finds it defective find the probability that it is a brand C product?
8) The number of suicides reported in a particular city will be described by
9) A workforce consists of seven workers. How many different three worker teams is it possible to select?
10) If A and B are mutually exclusive events then
11) Which one of these variables is a continuous random variable?
12) A randomly selected sample of 400 students at a university with 15-week semesters was asked whether or not they think the semester should be shortened to 14 weeks (with longer classes). Forty six percent (46%) of the 400 students surveyed answered "yes." Which one of the following statements about the number 46% is correct?
13) which of the following is a correct statement?
14) 4. Which of the following measures of central tendency tends to
be most influenced by an extreme score?

15) Nearly all the distributions are special cases of Poisson distribution


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4. Aaradhya Shukla-10 Points
5. 1420347-10 Points