Many couples believe that it is getting too expensive to host an "average" wedding in the United States. According to the website www. costofwedding. com, 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.

Does the confidence interval provide evidence that the mean cost of a wedding has decreased?

A) yes
B) no

answer: true

step-by-step explanation:

answer: no, but if it does it's a obvious pattern.

step-by-step explanation:

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry