Mathematics
Mathematics, 28.01.2020 02:31, trist22

The u. s. energy information administration (us eia) reported that the average price for a gallon of regular gasoline is $3.94 (us eia website, april 6, 2012). the us eia updates its estimates of average gas prices on a weekly basis. assume the standard deviation is $0.25 for the price of a gallon of regular gasoline and recommend the appropriate sample size for the us eia to use if they wish to report a desired margin of error of $0.05 at 95% confidence.
a. the desired margin of error is $.10.
b. the desired margin of error is $.07.
c. the desired margin of error is $.05.

answer
Answers: 1

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 20:30, brookieharrisop5n7us
What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?
Answers: 1
image
Mathematics, 21.06.2019 21:00, Anybody6153
Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.
Answers: 1
image
Mathematics, 21.06.2019 21:00, kprincess16r
Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)
Answers: 1
image
Mathematics, 21.06.2019 23:00, Mypasswordishotdog11
John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?
Answers: 1
Do you know the correct answer?
The u. s. energy information administration (us eia) reported that the average price for a gallon of...

Questions in other subjects:

Konu
Mathematics, 08.12.2021 03:50