PLEASE HELP FAST WILL MARK BRAINLIST
1 answer:
You might be interested in
Answer:
4.27%
Step-by-step explanation:
We have been given that college students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. We are asked to find the probability of college students that sleep for more than 9.6 hours.
We will use z-score formula to solve our given problem.
z = z-score,
x = Random sample score,
= Mean,
= Standard deviation.
Before substituting our given values in z-score formula, we need to convert 35 minutes to hours.
Now, we need to find .
Using formula , we will get:
Using normal distribution table, we will get:
Therefore, 4.27% of college students sleep for more than 9.6 hours.
Volume of a cone=
r^2*h/3
*3^2*6/3=56.55
volume fo a sphere = 4/3r^3
4/3*pi*1.5^3=14.14
56.55-14.14=42.41
volume fo a sphere = 4/3
4/3*pi*1.5^3=14.14
56.55-14.14=42.41