______________________ Answers: a) - b) 2.11 2 euros (NC) Which ones are binomial random variables? 2 % of bolts are defective. A random sample of 50 bolts is taken with replacement. The variable is the number of faulty bolts. A die is tossed 60 times. The variable is the number of sixes. A bag contains 3 brown and 5 white sweets. I eat 2 sweets. The variable is the number of white sweets eaten. There are 30 true-false questions in the test. Student guesses all the answers. The variable is the number of correct answers. If . Calculate the mean. A student is taking a multiple-choice exam in which each question has four choices. If there are five multiple-choice questions on the exam, what is the probability that student will get five questions correct? at least four questions correct? ______________________ Answers: a, b and d a) 0.201 b) 0.879 c) 0.0328 d) 2 a) 0.0098 b) 0.0156
______________________ Answers: a) - b) 2.11 2 euros (NC) Which ones are binomial random variables? 2 % of bolts are defective. A random sample of 50 bolts is taken with replacement. The variable is the number of faulty bolts. A die is tossed 60 times. The variable is the number of sixes. A bag contains 3 brown and 5 white sweets. I eat 2 sweets. The variable is the number of white sweets eaten. There are 30 true-false questions in the test. Student guesses all the answers. The variable is the number of correct answers. If . Calculate the mean. A student is taking a multiple-choice exam in which each question has four choices. If there are five multiple-choice questions on the exam, what is the probability that student will get five questions correct? at least four questions correct? ______________________ Answers: a, b and d a) 0.201 b) 0.879 c) 0.0328 d) 2 a) 0.0098 b) 0.0156