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1. A restaurant monitors its customer's complaints. Here are the percent of customers with the following complaints:
With this information, which of the following is a Pareto chart of the data?
A.
B.
C.
2. A process is out of control ifA. one point outside the control limits is found.B. there are nine consecutive points above or below the mean.C. Both choices are correct.
3. In constructing an s chart for a process, the estimate of the standard deviation is s = 0.967, based on samples of size 6. The center line for the chart will be at
A. 0.920.B. 0.967.C. 0.928.
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below.
The residents play both shuffleboard and poker, find the probability that a resident plays poker, given that they garden (that is, find P(poker | garden).
The MBA department is concerned that dual degree students may be receiving lower grades than the regular MBA students. Two independent random samples have been selected.
BMI in children is approximately normally distributed with a mean of 24.5 and a standard deviation of 6.2. A BMI between 25 and 30 is considered overweight. What proportion of children are overweight?
Assume a sample size of n=20. Draw a picture of the distribution of the t statistics under the null hypothesis. Use the t distribution critical values (upper-tail p) table.
What rule of probability are you using to obtain the joint probabilities and why? In order to answer the 'why' part of the question you must tell me why the rule of probability you chose to use applies in this case.
Find the mean score, X , of the data in the frequency distribution above and find the standard deviation of the scores in the frequency distribution above.
Consider a random variable Y, and a constant theta such that (1/theta)Y is distributed exponentially. Derive the lower and upper bounds for a 90% confidence interval for theta (These will be a function of y). Noe that theta=1/lambda where lambda i..
Calculate the margin of error that would be used to determine a 99% confidence interval for the mean pulse rate of all women.
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
At the 5 percent level of significance, does this sample prove a violation of the guideline that the average patient should pay no more than $250 out-of-pocket? State your hypotheses and decision rule.
Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.
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