Arc cd is two-thirds of the circumference of a circle. what is the radian measure of the central angle? startfraction 2 pi over 3 endfraction radians startfraction 3 pi over 4 endfraction radians startfraction 4 pi over 3 endfraction radians startfraction 3 pi over 2 endfraction radians

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?