Researchers conducted a study to determine the monthly rental cost of rent-controlled apartments in the five boroughs of new york city in 2012. the study randomly sampled 203 apartment records from brooklyn, obtained from a large collection of income- and expense-filing statements. the 95% confidence interval of rent-controlled apartment costs in brooklyn was $1,025.00 ± ± $9.24. the cost of all rent-controlled apartments in brooklyn has a standard deviation of $67.20. state the conclusion of the z z -confidence interval for the mean.

Researchers are 95% certain that the interval ($2005.76, $2024.24) contains the mean monthly rental cost of all rent-controlled apartments in Brooklyn.

Step-by-step explanation:

Last part of the question and choices are missing. Full question is like this:

Researchers conducted a study to determine the monthly rental cost of rent-controlled apartments in the five boroughs of New York City in 2012. The study randomly sampled 203 apartment records from Brooklyn, obtained from a large collection of income- and expense-filing statements. The 95% confidence interval of rent-controlled apartment costs in Brooklyn was $1,025.00 ± ± $9.24. The cost of all rent-controlled apartments in Brooklyn has a standard deviation of $67.20. State the conclusion of the z z -confidence interval for the mean.

Researchers are certain that the interval ($2005.76, $2024.24) contains the mean monthly rental cost of .

   all rent-controlled apartments in New York City.

   all rent-controlled apartments in Brooklyn.

   the 98 apartments in the sample.

   all apartments in Brooklyn.

Confidence Intervals give a range of values that the statistic (mean cost of  all rent-controlled apartments in Brooklyn) can assume in a confidence level (95%). Confidence levels give the levels we can be sure (95%) that the statistic falls within the interval.

Since the sample is about the rent-controlled apartments in Brooklyn, the confidence interval gives an estimate of the rent-controlled apartments in Brooklyn, not in New York.

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3