P. Question 30 !! In the Excel file "Test3Data.xlsx", you are given 25 samples of ingots (gold bars) selected random from various batches. Historical data suggests that the average number of impurities in an ingot is 515. Assuming that the number of impurities follows a normal distribution, what is the null and alternative hypothesis to determine if there is enough evidence to conclude that the historical average is ACTUALLY MORE? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a H_0: µ = 515; H_a: u # 515 H_0: µ < 515; H_a: µ > 515 C. H_0: µ z 515; H_a: µ < 515 H_0: p2515; H_a: p<515 Unanswered aSave !! Question 31 In the Excel file "Test3Data.xlsx", you are given 25 samples of ingots (gold bars) selected random from various batches. Historical data suggests that the average number of impurities in an ingot is exactly 505. What is the value of the test statistic (T.S.)? Select ananswerand submit For kevbeard paviation use the un/down arrou koys to selectan answer APR 7. tv MacBook Pro

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