Mathematics, 29.10.2019 23:31 kholman
Agas station earns $2.60 in revenue for each gallon of regular gas it sells, $2.75 for each gallon of midgrade gas, and $2.90 for each gallon of premium gas. let x1, x2, and x3 denote the numbers of gallons of regular, midgrade, and premium gasoline sold in a day. assume that x1, x2, and x3 have means Ī¼1 = 1500, Ī¼2 = 500, and Ī¼3 = 300, and standard deviations Ļ1 = 180, Ļ2 = 90, and Ļ3 = 40, respectively. a. find the mean daily revenue. b. assuming x1, x2, and x3 to be independent, find the standard deviation of the daily revenue.
Answers: 3
Mathematics, 21.06.2019 18:00
Write the equation for the parabola that has xā intercepts (ā2,0) and (4,0) and yā intercept (0,4).
Answers: 1
Mathematics, 21.06.2019 21:30
In a test for esp (extrasensory perception), the experimenter looks at cards that are hidden from the subject. each card contains either a star, a circle, a wave, a cross or a square.(five shapes) as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. when the esp study described above discovers a subject whose performance appears to be better than guessing, the study continues at greater length. the experimenter looks at many cards bearing one of five shapes (star, square, circle, wave, and cross) in an order determined by random numbers. the subject cannot see the experimenter as he looks at each card in turn, in order to avoid any possible nonverbal clues. the answers of a subject who does not have esp should be independent observations, each with probability 1/5 of success. we record 1000 attempts. which of the following assumptions must be met in order to solve this problem? it's reasonable to assume normality 0.8(1000), 0.2(1000)%30 approximately normal 0.8(1000), 0.2(1000)% 10 approximately normal srs it is reasonable to assume the total number of cards is over 10,000 it is reasonable to assume the total number of cards is over 1000
Answers: 1
Mathematics, 21.06.2019 23:00
You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax
Answers: 1
Mathematics, 22.06.2019 01:00
Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle
Answers: 1
Agas station earns $2.60 in revenue for each gallon of regular gas it sells, $2.75 for each gallon o...
Mathematics, 08.04.2020 22:53
Mathematics, 08.04.2020 22:53
Mathematics, 08.04.2020 22:53
Health, 08.04.2020 22:53
Mathematics, 08.04.2020 22:53
Geography, 08.04.2020 22:53
Mathematics, 08.04.2020 22:53
Health, 08.04.2020 22:53
Physics, 08.04.2020 22:53
Mathematics, 08.04.2020 22:53