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 lampâs mean life exceeds the current mean life at α = 0.05?
b. What is the p-value?
Answers: 3
Mathematics, 21.06.2019 14:00
In trapezoid efgh, mâ hef=(4x2+16)â and mâ gfe=(5x2+12)â. find the value of x so that efgh is isosceles. i'm desperate.
Answers: 3
Mathematics, 21.06.2019 18:00
Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.
Answers: 1
The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distr...
Biology, 16.10.2021 20:20
Mathematics, 16.10.2021 20:20
Mathematics, 16.10.2021 20:20
Mathematics, 16.10.2021 20:20
Mathematics, 16.10.2021 20:20
Mathematics, 16.10.2021 20:20
English, 16.10.2021 20:20
History, 16.10.2021 20:20