Mathematics, 17.12.2019 02:31 royal6032
Voltage sags and swells. refer to the electrical engineering (vol. 95, 2013) study of transformer voltage sags and swells, exercise 2.76 (p. 86). recall that for a sample of 103 transformers built for heavy industry, the mean number of sags per week was 353 and the mean number of swells per week was 184.
assume the standard deviation of the sag distribution is 30 sags per week and the standard deviation of the swell distribution is 25 swells per week. suppose one of the transformers is randomly selected and found to have 400 sags and 100 swells in a week. a. find the z-score for the number of sags for this transformer. interpret this value. b. find the z-score for the number of swells for this transformer. interpret this value.
Answers: 3
Mathematics, 21.06.2019 18:30, corrineikerd
41/17 as a decimal rounded to the nearest hundredth
Answers: 1
Mathematics, 21.06.2019 19:00, ivethzurita0425
{0,1,2,3,4,5,6,20,21,22,23,24,25} the distribution is considered to be: skewed the right, skewed the left, not skewed?
Answers: 1
Mathematics, 21.06.2019 19:10, lays20001
Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b. you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c. you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d. you spend $5 plus $10 per week until you have less than $45.
Answers: 3
Voltage sags and swells. refer to the electrical engineering (vol. 95, 2013) study of transformer vo...
Mathematics, 03.12.2019 20:31