Q:1

Q:2

solve both the questions in step by step.

Some quality control experiments require destructive sampling. The test to determine whether the item is defective destroys the item. The cost of destructive sampling often dictates small samples for example, suppose a manufacturer of printers for personal computers wishes to estimate the mean number of chatacters printed before the print hiead latls. Suppose the printer manufacture tests n=15 randomly selected print heads and records the nomber of characters printed until faifure for each These 15 measurements (in millions of characters) are listed below followed by EXCEL summary statistics: a) Making the appropriate asstmptions, forit a 99% confidence interval for the mean number of characters printed before the prut-head trils. [3 Marks] Future Haldiram franchise locations are carrently being considered. Top management hypothesized that the amount of individuals who live within 10 kilometers of a store has a significant impact on its success. The population information and annual sales information for 12 currently operating franchisees were gathered by analysts and are shown in the table below. To develop a model for predicting sales of a new franchise from its 10 - mm-radius population, the chief a. Use the least squares method to develop the estimated regression equation. [4 Marks] b. Calculate the R-square and interpret the regression results. [2 Marks] c. Estimate the sales of a new franchise with a 10km-radius population of 60,000. [2 Marks] Some quality control experiments require destructive sampling. The test to determine whether the item is defective destroys the item. The cost of destructive sampling often dictates small samples for example, suppose a manufacturer of printers for personal computers wishes to estimate the mean number of chatacters printed before the print hiead latls. Suppose the printer manufacture tests n=15 randomly selected print heads and records the nomber of characters printed until faifure for each These 15 measurements (in millions of characters) are listed below followed by EXCEL summary statistics: a) Making the appropriate asstmptions, forit a 99% confidence interval for the mean number of characters printed before the prut-head trils. [3 Marks] Future Haldiram franchise locations are carrently being considered. Top management hypothesized that the amount of individuals who live within 10 kilometers of a store has a significant impact on its success. The population information and annual sales information for 12 currently operating franchisees were gathered by analysts and are shown in the table below. To develop a model for predicting sales of a new franchise from its 10 - mm-radius population, the chief a. Use the least squares method to develop the estimated regression equation. [4 Marks] b. Calculate the R-square and interpret the regression results. [2 Marks] c. Estimate the sales of a new franchise with a 10km-radius population of 60,000. [2 Marks]