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In 1989,Kent motors produced 15,000 Tractors. During the year, 800 tractors were inspected and 5.2 defects per tractor (on average) were identified . What control chart would you use during production, including the control limits? Why use this chart? What is the probability of finding as many as 3 defects on a tractor? What is the probability that one would find exactly 7 defects on a tractor? What is the probability of finding exactly 5.2 defects on a tractor? Draw the OC curve. If the average number of defects increased by to 10 per tractor, what would the probability of detecting the shift in a control chart?
Explain which indicate that changes in the concentration of carbon dioxide which cause changes in the global temperature
FBI Report do greater universities that tend to have more property crime. Keep a scatter diagram also sketch the line you think best fits the data.
A Correlation matrix (correlation, coefficients and probability level under the hypothesis rho = 0) for a company's sales force (age, years of service, and current sales) is given below. Comment.
What is the probability of obtaining 4 ones in a row when rolling a fair, six-sided die? Interpret this probability.
Privacy Are your finances, buying habits, medical records, and phone calls really private? A real concern for many adults is that computers and Internet are reducing privacy. A survey conducted by Peter D.
Develop appropriate hypotheses such that rejection of H0 will support the researcher's contention.
Answer all of these questions using R Commander. Include all graphs, outputs from R Commander.
Is there evidence that population mean amount is different form 8.17 ounces? (Use a 0.05 level of significance.) with sample standard deviation of 0.051 ounce.
What is the mean and standard deviation of the number preferring the incumbent and what is the probability that more than 68% will favor the incumbent?
What happens to the expected return and standard deviation of returns of the portfolio in Part a if the following conditions exist?
By using the fact that Martha believes the treatment will decrease the amount of time to fall asleep, describe the null and alternate hypotheses.
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
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