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Operation control using x - bar chart
Using your charts, stated whether the filling operation has been in control for each of the 18 operating hours this day. State whether the process has been out of control in any hour, or whether there were indications the process is suspected to have been out of control.
If the voice identifications were made by random guess, find the probability that all 9 victims would select the same person?
Using ANOVA, determine if there is a significant difference in the six year graduation rate by type.
1st a confidence interval is constructed without utilizing the finite population correction factor.
If code is 4 random letters, and letters can be utilized multiple times, how many different possible codes are there?
Determine Probability using exponential distribution.The average time between failures of a laser machine is exponentially distributed with the mean of 40,000 hours.
According to a recent survey, 275 of 400 middle-aged Americans said they used the Internet regularly. 140 of 400 senior citizens said they used the Internet regularly.
Test whether there is a statistical difference between the two proportions at the 5% significance level.
A business owner decides to use a binomial distribution to solve one of his problems.
Estimate the population mean
Interpret values of b1, b2, b3 and b4 in this estimated regression equation.
Consider a Poisson distribution with a mean of two occurrences per time period.
A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.
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