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1. North and South have all the aces between them in a bridge game. What is the probability that one has one ace and the other has three?
2. Three independent proofreaders will read a manuscript. The prob- abilities that a particular error will be detected by them are respectively :92; :85, and :95. What is the probability that the error will go undetected?
3. * Two numbers are chosen without replacement from 1; 2; : : : 100. What is the probability that the smaller number is greater than 20 if the larger num- ber is smaller than 60?
4. Sam, Fred, and Vishy in that order take turns shooting at a bull's eye. Their success rates are20%; 30%, and 40%. What are the probabilities of each making the first hit at the bull's eye?
5. (Communication Channel). A signal passes through three filtering networks. The signal can be a C signal or a - signal. Each network has a probability p of transmitting the signal as it was received and probability 1 - p of transmitting it as the wrong signal. Assume that the networks function independently. If a signal is received as a C, what is the probability that it was sent as a C? You may assume that the prior probability is 50% that it was sent as a C.
Let's treat race of offenders as the independent variable and race of victims as the dependent variable. If we first ignore the independent variable and try to predict race of victim, how many errors will we make?
Assuming that the data may be looked upon as a random sample from a normal population, construct a 99% con?dence interval for the actual average number of errors per page in this book and interpret. In this problem, is the normal model appropriate..
It was reported that approximately 45% of all university professors are extroverted. Suppose you have classes with 6 different professors. What is the probability that all 6 are extroverts?
assume that adults have iq scores that are normally distributed with a mean of 100 and a standard deviation of 15.find
give the appropriate t quantile value tdf 1 - a2 that would be used to construct a confidence interval for the mean of
Compute a 95% confidence interval for the population mean, based on the sample 25, 27, 23, 24, 25, 24 and 59. Change the number from 59 to 24 and recalculate the confidence interval.
Containers of yogurt were inspected with regard to the number of days until they expire. 0 represents a yogurt container with today's date. The following table gives the frequency distribution of the number of day's expiry date. Prepare the relati..
An anatomy teacher hypothesizes that the final grades in her class are distributed as 10% A's, 23% B's, 45% C's, 14% D's, and 8% F's. At the end of the semester, she has the following grades.
many people believe that unusual behavior is more likely to occur during a full moon. in fact they believe that twice
What is the probabillity that in a random sample of 1,200 undergraduate business students, 336 or more will major in accounting?
A standard deviation of 68. a score is considered outstanding if it is at least 420. what is the % of the scores would be outstanding?
What is the average time that a customer spends waiting to be called to a chair?
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