Ahigh school statistics class wants to estimate the average number of chocolate chips in a generic brand of chocolate chip cookies. they collect a random sample of cookies, count the chips in each cookie, and calculate a 95% confidence interval for the average number of chips per cookie (18.6 to 21.3). which interpretation of the 95% confidence interval is valid? group of answer choices we are 95% certain that each cookie of this brand has approximately 18.6 to 21.3 chocolate chips. we expect 95% of the cookies to have between 18.6 and 21.3 chocolate chips. we would expect about 95% of all possible sample means from this population to be between 18.6 and 21.3 chocolate chips. we are 95% certain that the confidence interval of 18.6 to 21.3 includes the true average number of chocolate chips per cookie.