Question

Fifty cities provided information on vacancy rates (in %) in local apartments in the following frequency distribution.Vacancy Rate (%) Relative Frequency0 < x ≤ 3 0.023 < x ≤ 6 0.166 < x ≤ 9 0.169 < x ≤ 12 0.2412 < x ≤ 15 0.42a-4. what proportion of the cities had a vacancy rate of more than 9%? (round your answer to 2 decimal places.)

Answer 1

your answer is explained below

Explanation:

To find the proportion of cities with a vacancy rate of more than 9%, we need to add the relative frequencies for the classes with vacancy rates greater than 9%. These classes are 9 < x ≤ 12 and 12 < x ≤ 15.

Proportion of cities with a vacancy rate of more than 9%:

= Relative frequency for 9 < x ≤ 12 + Relative frequency for 12 < x ≤ 15

= 0.24 + 0.42

= 0.66

Therefore, 66% of the cities had a vacancy rate of more than 9%.

Rounding this answer to two decimal places, we get 0.66 as the final answer.