Question

An article of Industrial Engineer reported on a study of potential sources of injury to equine veterinarians conducted at a university veterinary hospital. Forces on the hand were measured for several common activities that veterinarians engage in when examining or treating horses. We will consider the forces on the hands for two tasks, lifting and using ultrasound. Assume that both sample sizes are 6, the sample mean force for lifting was 6.0 pounds with standard deviation 1.5 pounds, and the sample mean force for using ultrasound was 6.2 pounds with standard deviation 0.3 pounds. Assume that the standard deviations are known. What type of hypothesis test would be most appropriate to determine if the two activities result in significantly different forces on the hands? 2 Sample T-Test 2 Sample Z-Test 2 Sample F-Test 1 Sample T-Test Question 2 1 pts An article in the Journal of Aircraft described a new equivalent plate analysis method formulation that is capable of modeling aircraft structures such as cranked wing boxes and that produces results similar to the more computationally intensive finite element analysis method. Natural vibration frequencies for the cranked wing box structure were calculated using both methods. If the data were provided, what type of hypothesis test would you use to determine whether the two methods provide the same mean value for natural vibration frequency? Paired T-Test 2 Sample Z-Test 2 Sample F-Test 2 Sample T-Test

Answer 1

Here, given x S = 6 = 1.5 that 02-6 72 = 6.2 S = 0.3 Assume that Shandorod devianos ose known. then , What type of hypothesis test would be most approposate to deleoroine if the two activities result in significantly difrosent forces on the hands a Ans ® 25 orople z- test . 6 An crotice in the journal of Aircraft - descobed a new equivalent plate analysis method Forrowlation that is capable of modeling arcoft structubes such as coonred that poodure results similion to be the more computatimany intensive Finile element analysis method Datorral vibration Frequencies. For the Coanced wing box stoucture were calculated using both met mods, If the data were poorided what type of hypothesis test would you use to determine wether the two methods provide the Sande mean value for natural Vibration Frequency & & Hese, The poromeler of interest is the diffedence in meain natural vibration frequency

betooen the two methods MDeli - 2 - So, we use paised t-Statistic Ans - A paired I- test