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A newstand operator buys the Sunday edition of the WA post for $1.00 per copy and sells it for $1.50. The demand distribution for the Sunday edition over the last 100 weeks has been:
Number Requested Relative Frequencyless than 40 040 0.0241 0.0442 0.0743 0.144 0.1245 0.1346 0.1447 0.1248 0.149 0.0850 0.0551 0.0252 0.01over 52 0
a. Assuming that any newspaper left over has no value and that running short has no effect on any customer's tendency to return, determine the losses due to understockting and overstockting.
b. Based on the info from a determine how many copies should be stocked. Use incremental analysis.
c. If any newspaper left over could be sold to a fish market for .10 per copy how many copies should be stocked.
At the 0.10 significance level, can we conclude that the annual rates of return are higher on the big board?
A researcher wants to create a 99% confidence interval for the population mean. He has a sample of n=120, an x-bar of $340, and a sample standard deviation of $122. What is the margin of error?
A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selected a distribution, what value will be exceeded 10% of the time?
A researcher hypothesizes that parents with school-aged children are more probable to vote in favour of a referendum increasing public school spending than adults without school-aged children, but wonders of this relationship holds for both Democr..
A multicenter clinical trial involving 17,000 patients suspected of having acute myocardial infarction was conducted. The vascular death rate after 5 weeks was compared in patients receiving aspirin versus those not receiving aspirin
Evaluate this correlation. What does this correlation tell us about the relationship between these two instruments?
A sample of 40 ovservations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observers is selected from a second population.
The proportion of 25-29 year olds who are smokers is 0.032
Use the mean, median, and mode to make a statement about the difference in performance for city and highway driving.
Results were analyzed using one -way ANOVA and included SSTR =7 , 102 and SSE = 10 ,511. Are all 8 tapes equally appealing on average? Determine p value?
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
Determine the percentage of defective washers produced by this machine, assuming the diameters are normally distributed.
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