Suppose you are told that a 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $3.36 to $3.82. use the fact that the confidence interval for the mean is in the form x − e to x + e to compute the sample mean and the maximal margin of error e. (round your answers to two decimal places.)

The sample mean = $3.59 and the margin of error is 0.23.

Step-by-step explanation:

The confidence interval for mean is given by :-

, where   is the sample mean and E is the margin of error .

Given :  A 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $3.36 to $3.82.

Lower limit of confidence interval :     (1)

Upper limit of confidence interval :     (2)

Adding (1) and (2) , we get

From (1) , we have

Hence, the sample mean = $3.59 and the margin of error is 0.23.

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i