Answer:
Option C) 45%
Step-by-step explanation:
We have to find the percentage of all observations in a data set that lies between the 30th percentile and the third quartile.
The third quartile represents the 75 percentile of the data that is 0.75 of the cumulative proportion.
The 30 percentile is the 0.30 of the cumulative proportion.
Thus, the data lying between them can be found as:
[tex]\text{Data} \\= (0.75-0.30)\times 100\%\\= 45\%[/tex]
Option C) 45%
