Answer: 95.45 %
Step-by-step explanation:
Given : The distribution is bell shaped , then the distribution must be normal distribution.
Mean :
Standard deviation :
The formula to calculate the z-score :-
For x = 13
For x = 19
The p-value =
In percent,
Hence, the percentage of data lie between 13 and 19 = 95.45 %
The principal amount is
<u>SOLUTION: </u>
Given that, simple interest ;
after 3 years
We have to find the principal.
Now, let the principal amount be p.
Then,
Now, we know that, Balance = Principal amount + Simple Interest
Answer:
a) 0.705
b) 0.976
c) 0.01
d) 0.09
Step-by-step explanation:
We have to find the area under the standard normal curve.
a) area under the standard normal curve that lies outside the interval between z= −1.98 and z=0.61.
b) area under the standard normal curve to the left of z=1.98
c) area under the standard normal curve to the right of z= 2.34
d) area under the standard normal curve that lies between z= −0.94 and z= −0.63