A researcher takes a simple random sample of 83 homes in a city and finds that the mean square footage is 1628 with a standard deviation of 243 square feet. Which interval is the 90% confidence interval for the mean square footage of all the homes in that city?

ANSWER:

(1584 ft2, 1672 ft2)

If the table of the function contains exactly two potential turning points, one with an input value of –1, which statement best describes all possible values of m? m ≥ –12 –12 < m < 4 m ≤ 4 m ≥ 4 or m ≤ –12

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato