Answer key A certain brand of car is rated to get 35 miles per gallon on the highway. A researcher believes the claim is faulty – that is too high. His company drives a random sample of 40 cars in identical highway conditions for a total of 500 miles and checks the fuel economy. He finds that the average rating for the cars is 32.54 miles per gallon. Using a population standard deviation of 1.3mpg, determine if there is evidence at the 2% level that the company’s claim of 35 mpg is too high. Also, find a 98% confidence interval for the average mileage rating of this car and interpret the answer.

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 104 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 105 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30