Step-by-step explanation:
given a normal distribution with the given parameters the probability (= the % of the area of the distribution curve) for a number to be between 203 and 1803 is
0.9987
so, 99.87% of all numbers are expected to be in that range.
for 350,000 numbers that means
350,000×0.9987 = 349,545 numbers are expected to be between 203 and 1803.
Answer:
What's the question?
Step-by-step explanation:
Let Max be

years.
Then Lenny is

years
When we subtract Max's age from Lenny's age we obtain

This is equal to
Putting all together we have
X^2 - 2/3x + 1/9 is the answer i belive