Mathematics, 26.03.2021 08:10 charleechristan

The amounts of electricity bills for all households in a city have a skewed probability distribution with a mean of $140 and a standard deviation of $30. Find the probability that the mean amount of electric bills for a random sample of 75 households selected
from this city will be more than the population mean by at least $4.
Round your answer to four decimal places.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 21:40

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Answers: 3

Answer

Mathematics, 21.06.2019 22:30

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle

Answers: 2

Answer

Mathematics, 22.06.2019 00:20

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano

Answers: 3

Answer

Mathematics, 22.06.2019 03:20

Circle a has center of (2,3) and a radius of 5 and circle b has a center of (1,4) and a radius of 10. what steps will show that circle a is similar to circle b 1) dilate circle a by a scale factor of 2 2) translate circle a using the rule (x+1,y-1) 3) rotate circle a 180 degrees about the center 4) reflect circle a over the y-axis

Answers: 2

Answer

You know the right answer?

The amounts of electricity bills for all households in a city have a skewed probability distribution...

Questions

Mathematics, 13.11.2020 02:30

Landon is building new bookshelves for his bookstore's new mystery section. Each shelf can hold 34 books. There are 1,265 mystery books. How many shel...

Mathematics, 13.11.2020 02:30

Scientists studying biodiversity of amphibians in a rain forest have discovered that the number of species is decreasing by 2% per year. There are cur...