The question also states that Lucy has a winning probability of 1/50, which means that she has 1 chance of winning if the total runners were 50. Therefore, there are 49 runners who may be faster than her.
The fact that Lucy is the 50th slowest runner, means that starting from the slowest she is in 50th position, therefore there are 49 runners that are slower than her.
The total number of runners will be the sum of those faster than Lucy, those slower than Lucy and Lucy:
49 + 49 + 1 = 99
There are 99 runners in Lucy's school.
Answer: ![(-\infty, -4]](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%20-4%5D)
Curved parenthesis at negative infinity
Square bracket at -4
====================================================
Work Shown:

The last inequality shown above is the same as saying 
Converting this to interval notation leads to the final answer of ![(-\infty , -4]](https://tex.z-dn.net/?f=%28-%5Cinfty%20%2C%20-4%5D)
Note the use of a square bracket at -4 to include this endpoint. We can never include either infinity, so we always use a parenthesis for either infinity.
Answer:
<h2>
a) 0.38</h2><h2>
b) 0.62</h2><h2>
c) 0.78</h2><h2>
d) 0.03</h2><h2>
e) 0.02</h2><h2>
f) 0.62</h2><h2>
g) 0.38</h2>
Step-by-step explanation:
a)
Probability of a owner to be moved =
= 0.379 ≅ 0.38
b)
Probability of a renter to be moved =
= 0.62
c)
Probability of a person who moved in the same state =
= 0.779 ≅ 0.78
d)
Probability of a person who moved to a different country =
= 0.033 ≅0.03
e)
Probability of a owner who moved to a different country =
= 0.02
f)
Probability of a renter moving in the same state =
= 0.615 ≅ 0.62
g)
Probability of an owner moved to different state =
≅0.38
Hi there!
Let's break this down:
Two times a number = 2n
Increased by 5 = + 5
is 15 - = 15
Total equation:
2n + 5 = 15
Solving:
2n + 5 = 15
2n = 10
n = 5
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!