AnswersProbability and Statistics with Applications Honors Sem-2-FL-1210300 2024-2025Unit Test — Unit testQuestion 8
8
QuizMultiple Choice
Unit Test — Unit test
Question 8 • Probability and Statistics with Applications Honors Sem-2-FL-1210300 (2024-2025)
A cell phone manufacturer would like to estimate the mean difference in battery lifespan for a phone in full-power versus power-saver mode. They randomly select eight phones and determine the battery lifespan, in hours, for each phone using each power mode. The data are displayed in the table.What is the mean difference (low – full) and the standard deviation of the differences?
Answer
A
x Overbar difference = 5.875, s difference = 0.899
B
x Overbar difference = 5.875, s difference = 0.961
C
x Overbar difference = 6.063, s difference = 0.899
D
x Overbar difference = 6.063, s difference = 0.961