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A doctor's office staff studied the waiting times for patients who arrive at the office with a request for emergency service. The following data with waiting times in minutes were collected over a one-month period. 2 5 10 12 4 4 5 17 11 8 9 8 12 21 6 8 7 13 18 3 Use classes of 0-4, 5-9, and so on in the following:
a. Show the frequency distribution.
b. Show the relative frequency distribution.
c. Show the cumulative frequency distribution.
d. Show the cumulative relative frequency distribution.
e. What proportion of patients needing emergency service wait 9 minutes or less?
Use Wilcoxon rank-sum test to test at the .10 level of significance to test the claim that the difference in dosage have significant effect on the length of time it takes guinea pigs to fall asleep.
Create by hand decision tree for this problem and then examine decision tree to recognize optimal policy. Use TreePlan to create and solve decision tree.
The sample has a mean weight of 15.3 pounds and a standard deviation of 1.9 pounds. Create a 95% confidence interval estimate for the true mean weight of all packages received by the parcel service.
computing the mean and standard deviation for the given data.1.a population of scores has micro 50 and s 12. if you
Illustrate what can we say about the probability distribution. Is it approximately normal, elucidate the mean and standard deviation.
Is this an ideal data collection method? Can the results be considered reliable? Can the gathered data be representative of the population?
1.a company is studying their processes and for one of them the acidity of the mixture is critical. they have obtained
A quality control analyst wants to examine thermometers that give readings in the bottom 4%. Find the reading that separates the bottom 4% from the others.
The following frequency distribution shows the time (in minutes) that a sample of students uses the computer terminals per day. Compute the coefficient of variation.
Choose one time-series describing Spirit Airlines and make a line chart. (b) Describe the trend (if any) and discuss possible causes.
A recent national survey found that high school students watched an average (mean) of 6.8 videos per month. A random sample of 36 college students revealed that the mean number of videos watched last month was 6.2
A sample of 65 business people was randomly selected and given a leadership test. Construct a 95 percent confidence interval for the mean score on this test, using the estimated standard error of the mean.
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