Most computer laptops use a rechargeable lithium-ion battery. However, with brighter computer displays and more powerful chips, batteries are not lasting any longer. to determine the avg. number of hrs of use that a college student gets on a laptop before the batteries fail, 51 students were randomly selected, and values of the variable LaptopBatteryLife were recorded. find a 90% confidence interval for the mean battery lifetime. Use a t-distribution. Repeat, using normal distribution with sigma = 1.202583 and compare the two confidence intervals© BrainMass Inc. brainmass.com June 3, 2020, 9:25 pm ad1c9bdddf
The number of hours that a laptop computer will function hypothesis testing is examined. The solution answers the question(s) below.