question 11

Huafu Bing is analyzing a new recommendation algorithm for an extremely entertaining social media website. He wants to know how long users spend on average when the new algorithm is deployed on their feeds. He randomly samples 51 users, finding that they spend an average of 7.4 hours, with a standard deviation of 3.7 hours. Calculate the lower bound of a 95% confidence interval for this data. Below is a histogram of the collected data. Select one: O a. 6.532 Ob. 8.441 O c. 6.385 O d. 6.359 O e. 1.015 Of. 6.548