Mathematics, 08.10.2020 17:01, veve1787
"D" size batteries produced by MNM Corporation have had a life expectancy of 87 hours. Because of an improved production process, it is believed that there has been an increase in the life expectancy of its "D" size batteries. A sample of 80 batteries showed an average life of 88.5 hours. Assume from past information that it is known that the standard deviation of the population is 9 hours. Conduct a hypothesis test to determine whether there is statistically significant evidence to support that the life expectancy of batteries have improved. What is the p-value associated with the sample results?
Answers: 2
Mathematics, 22.06.2019 03:30, jonesromari
2. there are 250 students in a school auditorium. use numbers from the box to complete the table. 16, 38, 18, 45, 25, 50, 32, 60 grade number percent of all students of students fifth 24 sixth 95 seventh 20 eight 45
Answers: 1
"D" size batteries produced by MNM Corporation have had a life expectancy of 87 hours. Because of an...
Mathematics, 26.03.2020 07:16
Mathematics, 26.03.2020 07:16
Mathematics, 26.03.2020 07:16
Mathematics, 26.03.2020 07:16