In Exercises 9–12, refer to the sample data from the given exercises in Section 13–2 on page 611. Use the Wilcoxon signed-ranks test for the claim about the median of a population. Exercise 15 “Testing for Median Weight of Quarters”
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In Exercises 9–12, refer to the sample data from the given exercises in Section 13–2 on page 611. Use the Wilcoxon signed-ranks test for the claim about the median of a population.
Exercise 15 “Testing for Median Weight of Quarters”
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- In Exercises 9–12, refer to the sample data from the given exercises in Section 13–2 on page 611. Use the Wilcoxon signed-ranks test for the claim about the median of a population. Exercise 14 “Earthquake Depths”In Exercises 9–12, refer to the sample data from the given exercises in Section 13–2 on page 611. Use the Wilcoxon signed-ranks test for the claim about the median of a population. Exercise 13 “Earthquake Magnitudes”Refer to the table of sample values in Section 8.2 Exercise 10 of the text.Find the values of the UCL and LCL for the R chart for this data, and round your answers to 3 places after the decimal point. a. UCL = 1.376 LCL = 0.054 b. UCL = 1.134 LCL = 0.296 c. UCL = 1.198 LCL = 0.232 d. UCL = 1.433 LCL = 0
- In Exercises 1-5, refer to the following list of departure delay times (min) of American Airline flights from JFK airport in New York to LAX airport in Los Angeles. Assume that the data are samples randomly selected from larger populations. Normal Quantile Plot The accompanying normal quantile plot was obtained from the Flight 19 departure delay times. What does this graph tell us?The following data represent the smoking status by level of education for residents 18 years old or older living in a certain country from a random sample of 999 residents. Complete parts (a) and (b).The average monthly cell phone bill was reported to be $50.07 by the U.S. Wireless Industry. Random Sampling of a large cell phone company found the following monthly cell phone charges (in dollars): 55.45 44.99 62.99 70.63 60.01 54.54 48.91 50.49 58.61 51.97 At the 0.01 level of significance, can it be concluded that the average phone bill has changed?
- Using the z table in Appendix B (Table B-1), calculate the following percentages for a z score of +1.63. a.) % above this z score (in the tail): and b.) % below this z score (in the body):A report stated that on average a child eats more than 35 candies on the Halloween day. We randomly selected 16 children and obtained these data: 30 40 15 29 40 21 19 39 18 2 25 10 50 12 35 17 At α=.05 can it be concluded that the report is accurate?