Q17Comprehension3 Marks22 Dec 2024
Passage
The average battery life of smartphones for a certain model is 15 hours, with a standard deviation of 3 hours. An analyst suspects that the true average battery life is greater than 15 hours. To test this, he takes a random sample of 100 smartphones and finds that the sample mean battery life is 17 hours. Based on the above data, answer the given subquestions.
What conclusion will you make for the given test?