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1. Assume you have received a class assignment to determine the attitude of students in your school toward the school's registration process. What are the validity issues you should be concerned with?
2. According to a report issued by the U.S. Department of Agriculture (USDA), the agency estimates that the Southern fire ants spread at a rate of 4 to 5 miles a year. What data collection method do you think was used to collect this data? Explain your answer.
3. Suppose you are asked to survey students at your university to determine if they are satisfied with the food service choices on campus. What types of biases must you guard against in collecting your data?
4. Briefly describe how new technologies can assist businesses in their data collection efforts.
5. Assume you have used an online service such as Orbitz or Travelocity to make an airline reservation. The following day you receive an e-mail containing a questionnaire asking you to rate the quality of the experience. Discuss both the advantages and disadvantages of using this form of questionnaire delivery.
1 suppose xberp and yber q with 0ltplt1 0ltqlt1 and let x y be independent. determine the pmf for xy.2 suppose we have
What is the probability there will be between 10 and 14 calls inclusive arriving at the company in the next 15 minutes?
question a process for the manufacture of penicillin was studied. there were five variants of the basic process being
How many ways can a Math Club schedule 4 speakers for 4 different meetings if they are all available on any of 6 possible dates?
If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?
Assume that you researched insurance industry statistics and found out that the probability of major accident is 0.06%, and that the probability of a fender bender is 0.15%. What is the expected value decision? Would you choose this? Why or why no..
for University Y, M = 4, S2 = 1.5; and for University Z, M = 6, S2 = 2.5. What should you conclude? Use the .05 level. (a) Use the steps of hypothesis testing, (b) figure the effect size for the study.
Comparing the response times between 2 cab companies. companies A and B were each called at 50 randomly selected times. the calls to company A were independently made from the calls to company B. company A had a mean response time of 8.5 minutes with..
1. why is it important to specify the null and alternative hypothesis along with the significance level before the
Discuss the null hypothesis. How is it framed? What is the alternate hypothesis? How does it relate to the null hypothesis?
Statistics Test Scores - Tests in the author's statistics class have scores with a standard deviation equal to 14.1. One of his last classes had 27 test scores with a standard deviation of 9.3.
for the population of people who suffer occasionally from migraine headaches suppose that p 0.60 is the proportion
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