12. A special cable has a breaking strength of 800 pounds. The standard deviation of the population is 12 pounds. A researcher selects a sample of 20 cables and finds that the average breaking strength is 893 pounds and wants to determine if the breaking strength is greater than 800 pounds using a a = .05. Based on all the information you have been provided with about both the sample and population, which sketch below appears to show the correct Critical Region? A B D C 13. For a null hypothesis to be rejected, A. Our sample average must be significantly different than the population average. B. Our sample average must be shown to be significantly different than the sample size. C. Our sample average must be shown to be insignificantly different than the population average. D. Our population average must be significantly different than the population mean, E. Our population average must be insignificant compared to the population median.16. The bumblebee tuna company has for years operated under the assumption that the mean tuna consumption is 3.2 pounds of tuna per year with a (population standard deviation) of 1.13 pounds. However, an enterprising executive feels that the mean tuna consumption is inaccurate. She hires a market-research firm who samples 60 people and finds their average consumption to be 3.4 pounds. At an alpha level of .08, is the executive correct? A. 2 tail, Z test B: left tail, Z test, 60 degrees of freedom C. 2 tail, Z test, 59 degrees of freedom D. left tail, Z testMatch the correct letter with the symbol For questions 17-25: Mark the correct symbol for each specification below 02 a /2 S $2 E n a A. no match B. critical value C. inverse D. class width E. mode F. reciprocal G. frequency H. sample maximum I. class width J. sample average K. stratified L. median M. discrete N. n-1 O. null hypothesis P. upper bound Q. lower limit R. ordinal data S. range