Mathematics, 26.02.2020 00:57 markleal9484
A factory manager collected data on the number of breakdowns per day. From these data, he derived the probability distribution for X, the number of breakdowns on a given day:
X 0 1 2
prob 0.80 0.15 0.05
1)The mean of X is (exact answer)
2)The standard deviation of X is (to three places after the decimal)
3)On average, how many breakdowns are there per day?
4)Assuming there are weekend shifts in the factory (work goes on every day), about how many breakdowns are expected during a one-year period. (non-leap year, and round to the nearest whole number).
Answers: 2
Mathematics, 21.06.2019 14:30
Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3
Answers: 2
Mathematics, 21.06.2019 18:30
Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?
Answers: 2
Mathematics, 21.06.2019 20:30
The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle
Answers: 1
Mathematics, 21.06.2019 21:30
Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?
Answers: 3
A factory manager collected data on the number of breakdowns per day. From these data, he derived th...
Social Studies, 04.02.2020 11:47
Mathematics, 04.02.2020 11:47
English, 04.02.2020 11:47
Mathematics, 04.02.2020 11:47
Mathematics, 04.02.2020 11:48
History, 04.02.2020 11:48
Physics, 04.02.2020 11:48
History, 04.02.2020 11:48
Mathematics, 04.02.2020 11:48
Mathematics, 04.02.2020 11:48
Biology, 04.02.2020 11:48
Biology, 04.02.2020 11:48