Mathematics, 11.11.2019 23:31 skyemichellec
The article "time series analysis for construction productivity experiments" (t. abdelhamid and j. everett, journal of construction engineering and management, 1999: 87-95) presents a study comparing the effectiveness of a video system that allows a crane operator to see the lifting point while operating the crane with the old system in which the operator relies on hand signals from a tagman.
three different lifts, a, b, and c, were studied.
lift a was of little difficulty.
lift b was of moderate difficulty.
lift c was of high difficulty.
each lift was performed several times, both with the new video system and with the old tagman system. the time (in seconds) required to perform each lift was recorded. the following tables present the means, standard deviations, and sample sizes.
can you conclude that the mean time to perform a lift of low difficulty is less when using the video system than when using the tagman system?
explain.
Answers: 2
Mathematics, 21.06.2019 20:50
Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)
Answers: 2
Mathematics, 22.06.2019 00:00
Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15
Answers: 1
Mathematics, 22.06.2019 00:30
Find the values of the variables and the lengths of the sides of this kite.
Answers: 3
The article "time series analysis for construction productivity experiments" (t. abdelhamid and j. e...
Chemistry, 05.02.2020 07:54
Computers and Technology, 05.02.2020 07:54
Chemistry, 05.02.2020 07:54
Computers and Technology, 05.02.2020 07:54
Mathematics, 05.02.2020 07:54
Mathematics, 05.02.2020 07:54
Spanish, 05.02.2020 07:54
Chemistry, 05.02.2020 07:54
Social Studies, 05.02.2020 07:54
Mathematics, 05.02.2020 07:54