Ineed on how to solve these only #17,19

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?

Divide reduce the answer to lowest term 3/7 divided 1 1/6