Answer:
Relative frequency method
Step-by-step explanation:
Relative Frequency is a classical approach to probability. It is the ratio of the occurrence of a singular event to the total number of outcomes. This is a tool that is often used after data collection.
In relative frequency, a single part of the data can be compared to the total amount of data collected. This is cleearly observed in the given question.
The answer to the question is A.) 42
Answer: P(mean x<18.1077) = P(z< -2.67) = 0.0038
Step-by-step explanation:
Value of Z for 18.1077 = (18.1077 - 19.5)/0.5209 = -2.67