Question#3: [10 Marks) Find the Spearman's rank correlation for the given data and interpret the results. X72354679 Y56574798 Question 4: (3x5=15 Marks Summaries the result of the claim of the following hypothesis. Show it on the graph also. 1) A researcher reports that the average salary of a banker is more than 23000 RO. A sample of 50 bankers has a mean salary of 24000 RO. The standard deviation of the population is 4200 RO. At test the claim that professor earns more than 23000 RO per annum. 1) A shoe making company claims that the average cost of men's athletic shoes is less than 200 RO. A sample of 30 pairs of shoes has a mean cost of 205 RO. Standard deviation of is 250 RO. At test the claim that the cost of the shoes is less than 200 RO. 1) A local hospital doctor's team reports that the average cost of treatment of heart disease is 500 RO. To see if the average cost of treatment is different at a particular hospital, a researcher selected a random sample of 40 patients and found that the average cost of treatment is 400 RO. The standard deviation of the population is 250 RO. At test the claim of the hospital doctors. *** END OF TASK*** Reply