I just need 14.5 answered

14.5 In the second phase of Exercise 14.4, the analyst measured the elapsed time as a function of the complexity of the query. The complexity was measured by the number of keywords in the query. The number of disk-read operations were also measured, as shown in Table 14.5. For this data prepare regression models to predict the elapsed time as a function of number of keywords and interpret the results. TABLE 14.5. Database Performance as a Function of Number of Keywords Number of Keywords Elapsed Time Number of Disk Reads 0.75 0.70 0.80 1.28 1.60 14.4 The designers of a database information system that allows its users to search backward for several days wanted to develop a formula to predict the time it would take to search. Actual elapsed time was measured for several different values of days. The measured data is shown in Table 14.4. Prepare a simple regression model for this data to predict elapsed time as a function of the number of days and interpret results. TABLE 14.4 Measured Performance of a Database Information System Number of Days Elapsed Time 0.65 0.79 1.36 2.26 3.59 5.39