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The statistical technique used in the regression analysis. The sum of squares is a mathematical approach to determining the dispersion of the data points. In a regression analysis the goal is to determine how well a data series can be fitted into a function which might help to explain how the data series was generated. The sum of squares is used as a mathematical way to find the function, which best fits from the data. In order to determine the sum of squares the distance between each data point and the line of the best fit is squared and then all of the squares are summed up. The line of the best fit will minimize this value?
The inside diameter of a randomly selected piston ring is a random variable with mean value 12 cm and standard deviation 0.02 cm.
The accounting department at Western Materials Inc. national manufacturer of unattached garages, reports it takes two construction workers of a mean of 32 hours and standard deviation of 2 hours to erect Red Barn MODEL.
Determine Probability using exponential distribution.The average time between failures of a laser machine is exponentially distributed with the mean of 40,000 hours.
Develop a hypothetical table of data using a grid of 3 rows and four columns.
A precision parts manufacturer produces bolts for use in military aircraft. The specifications for bolt length are 37.50 ± 0.25 cm. The company has established an -chart and an R-chart using samples of size five.
The probability that more than 6 planes arrive in the next minute is _____.
The calculated chi-square test statistic and the table value for a 0.05 significance level are:
Employ the table of standard normal probabilities (z table) to answer the following questions.
Enter relative proportions of the 3 samples in order (20,50,30) in "Expected values" area.
What additional strategies (up to 3) you would propose that may increase validity of the findings.
Calculate separate confidence intervals for the numbers of days absent for Clinic A and Clinic B, respectively.
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
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