Number of times that the die comes
A fair coin is tossed repeatedly until a head appears. Let N be the number of trials until the first head appears. Then a fair die is rolled N times. Let X be the number of times that the die comes up 4. Calculate P{X = 0}, P{X = 1} and E[X].
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If the acceptable range is as in part (a) and the hardness of each of ten randomly selected specimens is independently determined, what is the expected number of acceptable specimens among the ten? (Round your answer to two decimal places.) specim
How significant are the results? What range of p-values would it fall under? Calculate a 95% confidence interval and interpret the results.
Compute the operating characteristics of the customer waiting line, assuming Poisson arrivals and exponential service times. Service goals dictate that an arriving customer should not wait for service more than an average of 5 minutes. Is this goal
However, the owner is concerned his staff isn't following this rule. To make sure they are, the owner decides to count the number of pieces of salmon on the next 40 pizzas and finds the average amount of salmon to be 11 pieces.
Explain how this system may be analyzed by using a Markov chain. How many states are needed? Calculate its transition probability matrix.
What is the probability that the coin flipped on the third day after the initial flip is coin 2? Suppose that the coin flipped on Tuesday comes up tail. What is the probability that the coin flipped on Saturday of the same week also comes up tail?
The third door leads to a tunnel that will return him to the mine after 7 hours. If we assume that the miner is at all times equally likely to choose any one of the doors, what is the moment generating function of time until he reaches safety?
There are 46 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time needed to grade a randomly chosen first examination paper is a random variable with an expected value of 5 min and a s
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