Using the Empirical Rule, it is found that the lifespans, in months, are given by:
1. 24 and 32.
2. 20 and 36.
3. 16 and 40.
It states that, for a normally distributed random variable:
Hence, considering the mean of 28 months and the standard deviation of 4 months, the life spans are given by:
More can be learned about the Empirical Rule at brainly.com/question/24537145
Answer:
9
Step-by-step explanation:
The Answer is: 63°
The angle 117° is the key information. Across the line, the angle 117° is part of the 180° across the line. Angle RMN is equal to 180° - 117° = 63°
29
24