634, you have to multiply it by 89% of the original number, 712, to deduct 11%
Answer:
a) Percentage of students scored below 300 is 1.79%.
b) Score puts someone in the 90th percentile is 638.
Step-by-step explanation:
Given : Suppose a student's score on a standardize test to be a continuous random variable whose distribution follows the Normal curve.
(a) If the average test score is 510 with a standard deviation of 100 points.
To find : What percentage of students scored below 300 ?
Solution :
Mean ,
Standard deviation
Sample mean
Percentage of students scored below 300 is given by,
Percentage of students scored below 300 is 1.79%.
(b) What score puts someone in the 90th percentile?
90th percentile is such that,
Now,
Score puts someone in the 90th percentile is 638.
Answer:
11.5cm
Step-by-step explanation:
1.2 meters = 120 centimeters
(for the 9 of them, with each being 9.5cm) = 9 * 9.5
=85.5cm
(For The rest of the remaining 3 books): 120cm - 85.5cm
=34.5cm
Each of them would be 34.5 / 3
=11.5cm
Answer:
$162
Step-by-step explanation:
Interest (non-compounding) = principal x rate x time (in years)
I = 900(.06)(3)
I = 162