Mathematics, 04.10.2021 14:00 angeljohnson2081
Forever Power Company analysts conducted tests on the life of its batteries and those of a competitor (Brand X). They found that their batteries had a mean life (in hours) of
26.6, with a standard deviation of 4.3. Their results for a sample of 10 Brand X batteries were as follows: 13, 17, 20, 24, 26, 26, 29, 32, 34, 37.
a. Find the mean and standard deviation for the sample of Brand X batteries.
b. Which batteries have a more uniform life in hours?
c. Which batteries have the highest average life in hours?
Answers: 2
Another question on Mathematics
Mathematics, 21.06.2019 17:50
To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1
Answers: 1
Mathematics, 21.06.2019 18:00
Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126
Answers: 1
Mathematics, 21.06.2019 19:00
Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9
Answers: 1
You know the right answer?
Forever Power Company analysts conducted tests on the life of its batteries and those of a competito...
Questions
Biology, 22.07.2019 00:32
Advanced Placement (AP), 22.07.2019 00:32
Mathematics, 22.07.2019 00:32
Mathematics, 22.07.2019 00:32
Mathematics, 22.07.2019 00:32
History, 22.07.2019 00:32
Mathematics, 22.07.2019 00:32
Geography, 22.07.2019 00:32
Computers and Technology, 22.07.2019 00:32
English, 22.07.2019 00:32
