3. Write Null Hypothesis and Alternate Hypothesis for the following scenarios: a. High school enrollment at Sachem North was 2500 students over the decades, the current principal thinks it has gone down now. b. A master's student is trying to prove that compressive strength of a sand filled plastic bottle used as brick is greater than the compressive strength of a traditional brick (2000 psi). c. A master's student is trying to prove that on average the cost of driving per mile of an electric car is lower than a traditional gas driven car that is costing $ 0.43 per mile currently. d. Another Master's student is trying to establish that error rate in US airport security screening has gone down since the installation of whole-body scanning machines in major airports. Generally, the error rate was 1 in 1000 persons screened. e. Median income of Nassau County household in 90's was $82500. It is believed the current median income level is higher. f. Average SAT score in an elite Ll school district was 1520 five years ago, it is believed different now. g. A master's student is trying to find out if the cost of school construction per square foot has come down by using alternate project delivery method that was $81.55 per square foot using traditional contracting method. h. A high school Robotic Team scored on average 30 points in robot basketball year. The coach is trying to find out if the use of new sensors will make any difference. i. Average Bank Interest rate was 1.01% recently. A business school researcher is trying find out if the very recent historic drop in stock market has any influence on the bank interest rate. j. Travel time during evening rush hours between LIE Exits 49 and 63 is 51 minutes. A researcher is trying to find out if changing the HOV lane to a general all access lane will make any difference. games last 3. Write Null Hypothesis and Alternate Hypothesis for the following scenarios: a. High school enrollment at Sachem North was 2500 students over the decades, the current principal thinks it has gone down now. b. A master's student is trying to prove that compressive strength of a sand filled plastic bottle used as brick is greater than the compressive strength of a traditional brick (2000 psi). c. A master's student is trying to prove that on average the cost of driving per mile of an electric car is lower than a traditional gas driven car that is costing $ 0.43 per mile currently. d. Another Master's student is trying to establish that error rate in US airport security screening has gone down since the installation of whole-body scanning machines in major airports. Generally, the error rate was 1 in 1000 persons screened. e. Median income of Nassau County household in 90's was $82500. It is believed the current median income level is higher. f. Average SAT score in an elite Ll school district was 1520 five years ago, it is believed different now. g. A master's student is trying to find out if the cost of school construction per square foot has come down by using alternate project delivery method that was $81.55 per square foot using traditional contracting method. h. A high school Robotic Team scored on average 30 points in robot basketball year. The coach is trying to find out if the use of new sensors will make any difference. i. Average Bank Interest rate was 1.01% recently. A business school researcher is trying find out if the very recent historic drop in stock market has any influence on the bank interest rate. j. Travel time during evening rush hours between LIE Exits 49 and 63 is 51 minutes. A researcher is trying to find out if changing the HOV lane to a general all access lane will make any difference. games last