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Question: Annoying phone calls. A newly hired telemarketer is told he will probably make a sale on about 12% of his phone calls. The first week he called 200 people, but only made 10 sales. Should he suspect he was misled about the true success rate? Explain.
What is the probability that the industry will locate in both cities and in neither city?
x is a normally distributed random variable with a mean of 5.0. find the standard deviation of the distribution if
What is the probability that the worker is on an assembly line?- Given that the worker is on an assembly line, what is the probability that the worker is unskilled?
How can you incorporate his uncertainty about the probabilities into your simulation? Now suppose he says that if he is optimistic about the success of one project, he is likely to be optimistic about the others as well. For your simulation, this m..
Compare exercise at a medium rate with exercise at a low rate. Do the data from the previous exercise give good reason to think that stepping at the medium rate increases heart rates more than stepping at the low rate?
assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of 2275
we have two urns where urn-1 contains 3 blue balls and 1 red ball while urn-2 contains 2 blue balls and 2 red balls.
estimating the expectationa measurement follows the normal distribution with standard deviation that is equal to 15 and
In a simple regression the regression equation is Yˆ= 5X + 7. Now if we interchange the X and Y data (that is, what was originally X is now Y and vice versa).
Is there any evidence to suggest that the true population proportion of males who give their children cough medicine is different from the true proportion of females? Use a = 0.05.
Discuss why the 90% and 99% confidence intervals are different. What would you expect to happen to the confidence interval in part A if the sample size was increased?
Find the probability that exactly 10 customers arrive in a given hour.
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