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A recent study of minimum wage earners found that 51.3% of them are 16 to 24. suppose a sample of 600 minimum wage earners is selected. is it appropriate to use the normal approximation to the binomial distribution. explain why what is the probability that mroe than 340 of the wage earners are 16 to 24 years old.
What is the number of personnel records that should be sampled, at minimum, to satisfy the requirements?
Suppose a worker needs to process 400 items. The time to process each item is exponentially distributed with a mean of 2 minutes, and the processing times are independent.
A Tamiami shearing machine produced 8 percent defective pieces. The quality control engineer has been checking the output by almost continuous sampling. What is the probability that in a sample of 9 pieces:
Approximately 14 percent of the population of Arizona is 65 years or older. A random sample of five persons from this population is taken. The probability that less than 2 of the 5 are 65 years or older is:
Place the steps below in the correct order for the construction of a control chart.
Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. Here are data on the "penetrability" of the same type of soil at 2 levels of compression.
The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?
There is a probability that the river will flood next year. Riverside's profits for the coming year depend on whether Laura buys the flood insurance and whether the river floods.
The linear correlation coefficient, r, measures the strength of the linear relationship the variables in a set of ordered pairs (x,y). What is the maximum and minimum values for r?
Determine the least squares equation. On the basis of this information, what are the estimated sales for 2005?
Compute the median number of dependents?
What is the difference between the Wilcoxon signed-ranks test and the Wilcoxon rank-sum test? no minimum word count.
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