The Mongols invaded Korea, known as Goryeo at the time, on several occasions between the years of 1231 and 1270. Which statement is true of those invasions?
OA. The Mongol forces were destroyed by a typhoon off the Korean coast.
OB. Korea was ruled by the Mongol Yuan Dynasty for many years.
OC. Korea defeated the Mongols with the help of the Chinese military.
OD. The Mongols lost nearly all of their soldiers to a superior Korean army.

Let the sample size of leg strengths be 7 and the sample mean and sample standard deviation be 945 watts and 48 watts, respectively. (a) is there evidence that leg strength exceeds 900 watts at significance level 0.05? find the p-value. there is , evidence that the leg strength exceeds 900 watts at ? -0.05. 0.001 < p-value 0.005 0.05 p-value < 0.10 0.10 p-value < 0.25 o 0.010 p-value 0.025 (b) compute the power of the test if the true strength is 915 watts. (c) what sample size would be required to detect a true mean of 915 watts if the power of the test should be at least 0.9? n= exact number, no tolerance