This test: 100 pomtts) possible @ Test: Final

Test: Final ... ti Question 14 of 25 This test: 100 point(s) possible This question: 6 point(s) possible Submit test The average battery life of the iPhone 4S is reported to be 7.0 hours of talk time. Assume that the standard deviation for the battery life for this cell phone is 45 minutes. A random sample of 38 iPhones had an average battery life of 6.5 hours. Which interval statement and conclusion is correct? O A. The interval that contains 95% of the sample means is 6.88 and 7.12 hours. Because the sample mean is between these two values, we do not have support that the average battery life equals 7.0 hours. O B. The interval that contains 95% of the sample means is 6.76 and 7.24 hours. Because the sample mean is not between these two values, we have support that the average battery life equals 7.0 hours. O C. The interval that contains 95% of the sample means is 6.76 and 7.24 hours hours. Because the sample mean is between these two values, we have support that the average battery life equals 7.0 hours. O D. The interval that contains 95% of the sample means is 6.76 and 7.24 hours. Because the sample mean is not between these two values, we do not have support that the average battery life equals 7.0 hours. its ource Resour )ptions Time Remaining. Next