A consumer group was interested in comparing the operating time of cordless toothbrushes manufactured by two different companies. Group members took a random sample of 18 toothbrushes from Company A and 15 from Company B. Each was charged overnight and the number of hours of use before needing to be recharged was recorded. CompanyA toothbrushes operated for an average of 119.7 hours with a standard deviation of 1.?4 hours; Company B toothbrushes operated for an average of 120.6 hours with a stande deviation of 1.72 hours. Do these samples indicate that Company B toothbrushes operate more hours on average than Company A toothbrushes? What are the correct hypotheses to address this question? Choose the best answer below. 0 HrA- s=o HA:#A#Bo OHO:A-B=D HA:#A-#B>U OHO:A-B>D HA:A-#B