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What's wrong? In each of the following scenarios, there is something wrong. Describe what is wrong and give a reason for your answer.
(a) If you toss a fair coin three times and get heads all three times, then the probability of getting a tail on the next toss is much greater than a half.
(b) If you multiply a random variable by 10, then the mean is multiplied by 10 and the variance is multiplied by 10.
(c) When finding the mean of the sum of two random variables, you need to know the correlation between them.
Which of the following mean expenses would be considered unusual?
between quarterly audits a company checks its accounting procedures to detect problems before they become serious. the
the probability that a tennis set will go to a tie-breaker is 19. what is the probability that two of three sets will
A large population of metal rods have an average diameter of .943 inches with a standard deviation of .001 inches. The engineering specification for the rods requires that they be between .941 and .944 inches.
A student is taking a multiple choice exam in which each question has four choices . Assume that the student has knowledge of a correct answer to any of the questions.
body mass index for newborns follows a normal distribution with a mean of 14 and standard deviation of .95. a doctor
If the sample mean is 15.2 oz. and the sample standard deviation is 0.40 oz., find the 95% confidence interval of the true mean.
suppose z is standard normal random variable. calculate the following possibilities.a.pzgt1.5b.p-0.33 ltz lt1.33c. pz
the wind mountain archaeological site is located in soutwestern new mexico. wind mountain was home to a culture of
Forecast quarterly demand where x = 0 in second quarter of last year. Quarterly seasonal factors are Q1=1.5, Q2=0.8, Q3=1.1, Q4=0.6. Determine the forecast for last quarter?
consider a product organized into inspection lots of n1800 items and for which u175 gm. for this product u2u78 gm u2l72
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02.
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