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In a precision grinding of a complicated part, it is more economical to rework the part than to scrap it. Therefore it was decided to establish the rework percentage at 12.5%. Assuming Normal distribution of the data, and a standard deviation of 0.01mm and an upper Specification limit of 25.38mm :
a. Determine the process center.
Find the p-value and explain what it means.b. Using the maintenance cost variable, conduct a test of hypothesis to determine whether the mean maintenance cost is less than $500 at the .05 significance level. Determine the p-value and interpret the..
1. an srs of size 10 is drawn from a population that has a normal distribution. the sample has a mean of 111 and a
Part variability is critical in the manufacturing of ball bearings. Large variances in the size of the ball bearings cause bearing failure and rapid wearout.
in a recent year deleware had the highest per capita annual income with 51803 . standard deviation 4850 find the mean
Allen Abbott has a wide-curving, uphill driveway leading to his garage. When ther is a heavy snow, Allen hires a local carpenter, who shovels snow on the side in teh winter, to shovel his driveway.
A positive integer valued random variable N is a stopping time with respect to the discrete time stochastic process {X1, X2, · · · } if for every n, the event {N = n} is determined by the values of {X1, X2, · · · , Xn}.
In a random sample of 21 pieces of paper birch, the sample variance in shrinkage was 0.39. Is there any evidence to suggest the population variance in shrinkage is less than 0.50? Assume normality and use a = 0.10.
These data represent the ages of drivers and the number of accidents reported for each age group in Pennsylvania for a selected year. Find the equation of the regression line for the given data.
When doing hypothesis testing we have two ways of making a decision - the critical value method and the p-value method. While both give the same results in terms of determining whether to reject or not reject the null hypothesis
paired samples t-test for the given data.a local voluntary organization affiliated to the citizens advice bureau offers
indicate whether the data are a time series or a cross section.number of cars sold in a dealership each day in
Write out the ANOVA table just showing Sources of Variability and degrees of Freedom and indicate which SV are fixed effects and which are random.
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