Question 1092101
First of all, the distribution of sample means of one-bedroom apartments will have a normal distribution even though the distribution of one-bedroom apartments is positively skewed (Central Limit Theorem). 
:
Mean μ = 2350
Standard deviation σ = 260
Standard error σ / √ n = 260 / √ 65 = 32.249031
standardize xbar to z = (xbar - μ) / (σ / √ n )
P(xbar > 2260) = P( z > (2260-2350) / 32.249031)
= P(z > -2.7908) = 0.9974
(from normal probability table)