7.9 questions left (not sure about this answer but I hope it’s right)
Answer:140
Step-by-step explanation:
50 miles per hour
264,000 feet in 60 minutes
4,400 feet per minute
73.33... feet per second
73.3 feet per second (rounded to the nearest tenth)!
Answer:
a
Step-by-step explanation:
replace x with -7
Answer:
a) 10.6; 48.7; within
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed 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.
In this problem, we have that:
Mean = 29.6
Standard deviation = 6.35
"According to the Empirical Rule, the ages of nearly all lead actresses will be between______________and_____________ years.
Nearly all(99.7%) will be within 3 standard deviations from the mean.
So from 29.6 - 3*6.35 = 10.6 years to 29.6 + 3*6.35 = 48.7 years.
Anna was 11-years old, so she was within this range.
So the correct answer is
a) 10.6; 48.7; within
