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The personal identification numbers (PINs) for automatic teller machines usually consist of four digits. You notice that most of your PINs have at least one 0, and you wonder if the issuers use lots of 0s to make the numbers easy to remember. Suppose that PINs are assigned at random, so that all four-digit numbers are equally likely.
(a) How many possible PINs are there?
(b) What is the probability that a PIN assigned at random has at least one 0?
a fair six sided die is rolled 10 times. calculate the expected value of the sum of the numbers observed. then compute
Work standards specify time, cost, and efficiency rooms for the performance of work tasks. They are typically used to monitor job performance. In the distribution centre of McCormick and Co. Inc, data were collected to develop work standards for t..
golfweek reported in 2003 that the driving distance for the top 100 golfers on the pga tour is between 287.7 and 310.6
You are using exponential smoothing to obtain monthly forecasts of the sales of a certain product. The forecast for last month was 2,083, and then the actual sales turned out to be 1,973. Obtain the forecast for next month for each of the followin..
for a particular company the number of sick days used by employees had a mean of 7 and a standard deviation of 2.a. a
Are there any main effects?- Is there an interaction?- Graph the means.- Describe the results in a brief paragraph.
A nationwide sample of influential Republicans and Democrats was asked as part of a comprehensive survey whether they favored lowering environmental standards so that high-sulfur-coal could be burned in coal fired power plants.
The sample to be 99% sure the sample mean is with 1 semester hour of the population mean for all students at this college?
Mike works in a quality at a well known saw blade company. An inpsector on his team has uncovered an issue with the kerf dimension on the bandsaw blade line.
1.Cranberries can be harvested using either a wet method or a dry method.
Compute the ‘net' expected values for each product (i.e. expected value for its success minus expected value for its failure). Based on these ‘net' expected values, which product should the company pick?
A town council includes 10 Democrats and 15 Republicans.- What is the probability that there will be at least 3 Republicans on the committee?
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