K100 is deposited at the end of each quarter in an account that pays 20% compounded quarterly. How much money will we have in the account in 2 years and 3 months? Present the quarterly payments in a table

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