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- Use the table of values you made in part 4 of the example to find the limiting value of the average rate of change in velocity.Continued This is a continuation of Exercise 13. As we saw earlier, the stock turnover rate of an item is the number of times that the average inventory of the item needs to be replaced as a result of sales in a given time period. Suppose that a hardware store sells 80 shovels each year. a. Suppose that the hardware store maintains an average inventory of 5 shovels. What is the annual stock turnover rate for the shovels? How is this related to the yearly number of orders to the wholesaler needed to restock inventory? b. What would he the annual stock turnover rate if the store maintained an average inventory of 20 shovels? c. Write a formula expressing the annual stock turnover rate as a function of the average inventory of shovels, identify the function and the variable, and state the units.Find the average rates of change of f(x)=x2+2x (a) from x1=3 to x2=2 and (b) from x1=2 to x2=0.
- According to a high-profile realtor, houses in the sleepy town of Sun Beach have shown higher appreciation over the past three years than have houses in the bustling town of North Arden. To test the realtor's claim, an economist has found eight recently sold homes in Sun Beach and eight recently sold homes in North Arden that were owned for exactly three years. The following table gives the appreciation (expressed as a percentage increase) for each of the sixteen houses. Appreciation rates in percent Sun Beach 10.2, 9.7, 12, 10.4, 7.9, 10.9, 9.6, 13.3 North Arden 7.5, 12.8, 5.9, 8.5, 8.1, 9.3, 6.3, 13.4 Assume that the two populations of appreciation rates are normally distributed and that the population variances are equal. Can we conclude, at the 0.05 level of significance, that houses in Sun Beach have higher appreciation over the past three years than houses in North Arden? Perform a one-tailed test. The null hypothesis: H0:…The accompanying data represent the annual rates of return of two companies' stock for the past 12 years. Complete parts (a) through (k). Year Rate of Return of Company 1 Rate of Return of Company 21996 0.203 0.3981997 0.310 0.5101998 0.267 0.4101999 0.195 0.4362000 -0.101 -0.0602001 -0.130 -0.1512002 -0.234 -0.3572003 0.264 0.3282004 0.090 0.2072005 0.030 -0.0142006 0.128 0.0932007 -0.035 0.027 (j) Plot residuals against the rate of return of Company 1. Does the residual plot confirm that the relation between the rate of return of Company 1 and Company 2 is linear? Yes or No? (k) Are there any years where the rate of return of Company 2 was unusual? Yes or No?Which of the following conclusions is not supported by data in the graph? 1. The ratio of biomass to fossil fuel extraction did not change that much in that time. 2. Overall, fewer tons of metals were extracted than minerals. 3. The extraction of all four types of natural resources - biomass, minerals, metals and fossils fuels - increased steadily for several decades after 1980. 4. Biomass energy is a renewable resource.