a plane takes 3 hours and 36 minutes to fly from the Cayman Island to New York. The plan flies a distance of 2470 km. Work out the average speed of the plane in km/h. Give your answer correct to the nearest whole number.

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics