Mathematics, 24.06.2019 23:40 angelinaranee15
The life in hours of a 75-watt light bulb is known to be normally distributed with σ= 27 hours. a random sample of 20 bulbs has a mean life of ¯x= 1012 hours. suppose that we wanted the margin of error in estimating the mean life from the two-sided confidence interval to be five hours at 95% confidence. what sample size should be used?
Answers: 3
Mathematics, 21.06.2019 16:00
An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.
Answers: 2
Mathematics, 21.06.2019 21:10
If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)
Answers: 1
The life in hours of a 75-watt light bulb is known to be normally distributed with σ= 27 hours. a ra...
Chemistry, 24.02.2021 18:50
Biology, 24.02.2021 18:50
Mathematics, 24.02.2021 18:50
Mathematics, 24.02.2021 18:50
Mathematics, 24.02.2021 18:50
Social Studies, 24.02.2021 18:50
Mathematics, 24.02.2021 18:50
English, 24.02.2021 18:50
Mathematics, 24.02.2021 18:50
Mathematics, 24.02.2021 18:50
English, 24.02.2021 18:50
Social Studies, 24.02.2021 18:50
Mathematics, 24.02.2021 18:50