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The numbers 0 through 9 are used in code groups of two to identify an item of clothing. Code 83 might identify a blue blouse, size medium. The code group 46 might identify a pair of pants, size 18, and so on. Repetitions of numbers are not permitted, i.e., the same number cannot be used more than once in a total sequence. As examples, 27, 94 or 55 would not be permitted. How many different code groups can be designed?
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49.
Fitting of simple linear regression equation - Given the student population for a school district over the past few years, find the prediction equation for this data.
Standardize the value according to the given average and SD - unstandardize the value according to the given average and SD
Probability using discrete distribution.The probability distribution for the random variable x follows.
This distribution is positively skewed. The standard deviation of the population is not known.
Is it reasonable typical worker does not miss any days during a pay period?
Assume that x has a normal distribution, with the specified mean and standard deviation. Find the indicated probabilities.
Determine: SS(xy)Linear correlation coefficient, r. Bar graph below compares mean time in seconds for 7-yr old girls to complete certain task.
Find out the cheapest way of manufacturing today's batch of NasaMist.
For each lettered part, a through c, examine the two given sets of numbers. Without doing any calculations, decide which set has the larger standard deviation and explain why. Then check by finding the standard deviation by hand .
Solve different inventory control problems using an appropriate OR method.
The assembly time for a product is uniformly distributed between 6 to 10 minutes. The probability of assembling the product between 7 to 9 minutes is
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