Answer:
a) 0.5588
b) 0.9984
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 24
Standard Deviation, σ = 6.4
We are given that the distribution of score is a bell shaped distribution that is a normal distribution.
Formula:
a) P(score between 20 and 30)

b) Sampling distribution
Sample size, n = 22
The sample will follow a normal distribution with mean 24 and standard deviation,

c) P(mean score of sample is between 20 and 30)

Volume of cuboid=lenght*breadth*height
=3ft*3ft*5ft
=45ft^3
Answer:
1.68x2.5=4.2
Step-by-step explanation:
The answer is 40%
Here is how I got it.
36/90* 100%= 2/5* 100%=2* 20%=40%
P=presne amount=5000
A=furutre amount which you want to be 5304.50
solve for r
5304.50=5000(1+r)^2
divide both sides by 5000
1.0609=(1+r)^2
sqrt both sides (remember to get positive and negative roots)
+/-1.03=1+r
minus 1 both sides
+/-1.03-1=r
+1.03-1=r=0.03=3%
-1.03-1=r=-2.03=false, no negative percents
answer is 3%