An electrical engineer wishes to compare the mean lifetimes of two types of transistors in an application involving high-temperature 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 164 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 219 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.

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.