5. The following table gives the measurements of the weights, in kilograms, of adult male polar bears in a region of Alaska. Note: data file is posted on D2L in the Content -> Exam 3 folder with the name PolarBears. csv. Weight (kg) 493 482 431 450 452 467 471 (20 pts) a. Adult male polar bears have a mean weight of 480 kgs, according to many studies. State the null hypothesis and the alternative hypothesis that should be used to determine if the mean weight of polar bears in this region of Alaska is below the accepted mean weight of 480 kgs. He: English version: Symbolic version: HA: English version: Symbolic version: b. Calculate the p-value. Using a significance level of 0.05, should the researchers reject or fail to reject the null hypothesis from part a? c. Write your conclusion from part b. in a way that a non- statistics person would understand