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 98 apartment records from Staten Island, obtained from a large collection of income- and expense-filing statements. The 95% confidence interval of rent-controlled apartment costs in Staten Island was $888.00 ± $11.72. The cost of all rent-controlled apartments in Staten Island has a standard deviation of $59.20. State the conclusion of the z -confidence interval for the mean.
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 98 apartment records from Staten Island, obtained from a large collection of income- and expense-filing statements. The 95% confidence interval of rent-controlled apartment costs in Staten Island was $888.00 ± $11.72. The cost of all rent-controlled apartments in Staten Island has a standard deviation of $59.20.
State the conclusion of the z-confidence interval for the mean.
Researchers are ________certain that the interval ($876.28, $899.72) contains the mean monthly rental cost of _____. (
all rent-controlled apartments in New York City.
all rent-controlled apartments in Staten Island.
the 98 apartments in the sample.
all apartments in Staten Island.)
monthly rental cost of.