What requirements must be satisfied? select all that apply. a. at least one observation must be above or below 9090 sec. b. either the population is normally distributed, or ngreater than> 30, or both. c. the sample observations must be a simple random sample. d. the conditions for a binomial distribution must be satisfied?

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?