In an experiment involving high-temperature performance of two types of transistors, a sample of 60 transistors of type a were tested and were found to have a mean lifetime of 1437 hours and a standard deviation of 179 hours. a sample of 180 transistors of type b were tested and were found to have a mean lifetime of 1356 hours and a standard deviation of 244 hours.
1. can you conclude that the mean lifetimes differ between the two types of transistors?

a² + b²= c²

24² + 7² = c²

c= 25

18.75 gallons

step-by-step explanation:

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.

idk u tell me

step-by-step explanation: