A group of friends are going on a day out to Project Hilsha. They divided their...

 

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A group of friends are going on a day out to Project Hilsha. They divided their route into 3 equal parts, and planned on maintaining an average speed of 68 km/h on their way to their destination. Their speed for the first and second part were 72 km/h and 88 km/h respectively. What speed should they maintain for the third part of their journey if they are to achieve their target average speed? Question 5 Let's assume you bought a new car with Tk. 3,500,000. The car depreciates in value by 40% after the first year, 20% after the second year, and 10% after the third year onward. What is the average rate of depreciation per year after three years? Therefore, what will be the value of the car after three years of use? Question 6 A study on a range of automotive lubricants reported the following data on oxidation-induction time (min) for various commercial oils: Oxidation-Induction Time: 87 103 130 160 180 195 132 145 211 105 145 153 152 138 87 99 93 119 129 a. Calculate the sample variance and standard deviation for the oxidation-induction time. b. If the observations were converted and displayed in hours, what would be the resulting values of the sample variance and sample standard deviation? Answer without actually performing the conversion. A group of friends are going on a day out to Project Hilsha. They divided their route into 3 equal parts, and planned on maintaining an average speed of 68 km/h on their way to their destination. Their speed for the first and second part were 72 km/h and 88 km/h respectively. What speed should they maintain for the third part of their journey if they are to achieve their target average speed? Question 5 Let's assume you bought a new car with Tk. 3,500,000. The car depreciates in value by 40% after the first year, 20% after the second year, and 10% after the third year onward. What is the average rate of depreciation per year after three years? Therefore, what will be the value of the car after three years of use? Question 6 A study on a range of automotive lubricants reported the following data on oxidation-induction time (min) for various commercial oils: Oxidation-Induction Time: 87 103 130 160 180 195 132 145 211 105 145 153 152 138 87 99 93 119 129 a. Calculate the sample variance and standard deviation for the oxidation-induction time. b. If the observations were converted and displayed in hours, what would be the resulting values of the sample variance and sample standard deviation? Answer without actually performing the conversion.

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Sol Given Average Apeed 68 kmn Apeed tor tirt part 42 kmh spee... View the full answer