An electrical engineer wishes to compare the mean lifetimes of two types of transistors in an application involving high-tempera

Question

4 years ago

13

An electrical engineer wishes to compare the mean lifetimes of two types of transistors in an application involving high-tempera

ture performance. A sample of 60 transistors of type A were tested and were found to have a mean lifetime of 1827 hours and a standard deviation of 176 hours. A sample of 180 transistors of type B were tested and were found to have a mean lifetime of 1658 hours and a standard deviation of 246 hours. Let μX represent the population mean for transistors of type A and μY represent the population mean for transistors of type B. Find a 95% confidence interval for the difference μX−μY . Round the answers to three decimal places.

Mathematics

1 answer:

Verizon [17] · Answer 1 · 2022-01-12T03:05:08+03:00

Verizon [17]4 years ago

7 0

Answer:

add the decimals thats all

Step-by-step explanation: