From the given statement above, the information that can be extracted from the data is the mean which is equal to 9 % , SD equal to 4%, n is equal to 20. we can also get the variance from SD. also, we can also determine the z-score of the data which is important in the distribution.
43/75
You can divide both the numerator and denominator by five.
Hope this helps. ^^
Answer:
243 divided by 3 equals 81 so r=81
Step-by-step explanation: