Mathematics, 29.07.2019 18:10 DeathFightervx
Lightbulbs of a certain type are advertised as have an average lifetime of 750 hours. a random sample of 50 bulbs was selected and the lifetime of each bulb was determined. the sample mean lifetime was 738.44 hours with a standard deviation of 38.2 hours. based on this data, can you conclude that the true average lifetime of these bulbs is less than what advertised? test using = .05.
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 16:30, amir6658
Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.
Answers: 1
Mathematics, 21.06.2019 20:00, baileybryant580
Describe a situation that you could represent with the inequality x< 17
Answers: 2
You know the right answer?
Lightbulbs of a certain type are advertised as have an average lifetime of 750 hours. a random sampl...
Questions in other subjects:
Arts, 28.06.2019 15:00
Mathematics, 28.06.2019 15:00
Mathematics, 28.06.2019 15:00
Mathematics, 28.06.2019 15:00
