Mathematics, 25.04.2020 01:34 ninjaben

The amounts of electricity bills for all households in a particular city have an approximately normal distribution with a mean of and a standard deviation of . Let be the mean amount of electricity bills for a random sample of households selected from this city. Find the mean and standard deviation of . Round your answers to the nearest integer, if required. Comment on the shape of the sampling distribution of . The sampling distribution of is . Click if you would like to Show Work for this question: Open Show Work

Answers: 1

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 16:30

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Answers: 3

Answer

Mathematics, 21.06.2019 17:20

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

Answers: 1

Answer

Mathematics, 21.06.2019 18:20

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?

Answers: 2

Answer

Mathematics, 21.06.2019 18:30

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Answers: 1

Answer

You know the right answer?

The amounts of electricity bills for all households in a particular city have an approximately norma...

Questions