Many couples believe that it is getting too expensive to host an "average" wedding in the united states. according to the website the average cost of a wedding in the u. s. in 2009 was $24,066. recently, in a random sample of 40 weddings in the u. s. it was found that the average cost of a wedding was $23,224, with a standard deviation of $2,903. on the basis of this, a 95% confidence interval for the mean cost of weddings in the u. s. is $22,296 to $24,152.

Step-by-step explanation:

Given that many couples believe that it is getting too expensive to host an "average" wedding in the United States.

Population mean =24066

Sample mean =  23224

Sample size = 40

Sample std dev = 2903

Since sample std dev is known, we use t critical value.

df =39

Sample mean follows a normal distribution with mean = 23224, and std dev =

t critical value = 2.023

Margin of error = 2.023*459.005

Confidence interval

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

step-by-step explanation:

in which figure is point g a centroid