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A quality control engineer monitors the quality of a cylinder production line. He regularly selects a sample of 5 units and measures the diameters. The specification requires the diameter to be 6 inches plus/minus 0.1 inch. The following is a record of the measurements. Is the production process in control? Please use X bar and R charts to make an assessment.
A customer wants to lease four machines immediately. To meet the customer's deadline, four of the eight machines are randomly selected and, without further checking, shipped to the customer. What is the probability that the customer receives no ma..
The subsystem will operate if any two of the four components are operating. Assume that the components operate independently. Find the probability that exactly two of the four components last longer than 1000 hours.
Describe what this cor relation indicates about the association between the fastest speed driven and picking a number between 1 and 10.
an elementary school is offering 3 language classes one in spanish one in french and one in german. these classes are
Construct a 95% confidence interval estimate for the population proportion of social media users who would say it is not okay to friend their boss. Write a short summary of the information derived from (a) and (b).
Use normal disrtibution of fish lengths for which the mean is 8 inches and the standard deviation is 5 inches. Assume the variable x is normally distributed.
Scores are obtained from the Law School Admission Test (LSAT) are normally distributed with a mean score of 550 and a standard deviation of 110.
there are 40 students in an elementary statistics class. on the basis of years of experience the instructor knows that
the assumptions of the production order quantity model are met in a situation where annual demand is 3650 units setup
records pertaining to the hourly brown trout catch have been obtained in order to include this parameter into a
A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5.
Identifies four criteria and their corresponding percentage weights. Option A has ranks as shown in the table below: Calculate the importance score sum for option A?
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