Mathematics, 23.08.2021 21:30 DoomydoomGir

The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distributed with a mean of 2,600 hours and a standard deviation of 550 hours. Required:
a. If a new ballast system shows a mean life of 3,143 hours in a test on a sample of 12 prototype new bulbs, would you conclude that the new lamp’s mean life exceeds the current mean life at α = 0.05?
b. What is the p-value?

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 20:40, eddyjunior679

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice

Answers: 3

continue

Mathematics, 21.06.2019 21:30, anaemigarcia

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Answers: 2

continue

Mathematics, 21.06.2019 21:30, BARRION1981

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?

Answers: 1

continue

Mathematics, 22.06.2019 00:30, qqbear4555

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.

Answers: 1

continue

You know the right answer?

The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distr...