Answer:
a. The empirical rule.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed(bell-shaped) random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
So the correct answer is:
a. The empirical rule.
Answer:
D
Step-by-step explanation:
151 + 29 = 180
Answer:
31
Step-by-step explanation:
50 x 0.62 = 31
Change in value = 87 - 42 = 45
percentage change = 45/42 x 100 = 107%
