A high school statistics class wants to estimate the average number of chocolate chips per cookie in a generic brand of chocolate chip cookies. They collect a random sample of cookies, count the number of chips in each cookie, and calculate a 95% confidence interval for the average number of chips per cookie to be (18.6, 21.3). Indicate whether each of the following interpretations of the confidence interval is valid or invalid.

1. 31)We are 95% confident that each cookie for this brand has approximately 18.6 to 21.3 chocolate chips.

A. Valid

B. Invalid

1. 32)We are 95% confident that the average number of chocolate chips per cookie for all cookies of this brand is between 18.6 and 21.3 chips per cookie.

A. Valid

B. Invalid

1. 33)We expect 95% of the cookies to have between 18.6 and 21.3 chocolate chips.

A.Valid

B. Invalid