Answer:
A student must obtain a grade of at least 84.2 in order to get an A.
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
If only the best 14 % of the students in the class will receive an A, what grade must a student obtain in order to get an A?
This is the value of X when Z is in the (100-14) = 86th percentile.
So it is the value of X when , and higher values of X. So
A student must obtain a grade of at least 84.2 in order to get an A.
Answer:
{16-10}{4+2}=36 For me, I use parenthesis () instead: (16-10)(4+2)=36
Step-by-step explanation:
With parenthesis, you don't have to put the multiply sign between the 2: (16-10) x (4+2) --> (16-10)(4+2).
Answer:
<u>Use the following identity:</u>
- a³ + b³ + c³ = 3abc if a + b + c = 0
<u>Substitute:</u>
<u>and get:</u>
- (3x)³ + (5y)³ + (4z)³ = 3(3x)(5y)(4z)
- 27x³ + 125y³ + 64z³ = 180xyz
If the volume of a sphere is 576 pi cubic units, then the radius is 7.56. I arrived to this answer through solving first what is 576 (<span>π) which led me to the answer 1808.64. Then I solved for the radius through deriving the formula of a volume of a sphere to finding the radius. Thus, the final ansewr is 7.56 units. </span>
Answer:
g= - 1/2 I think so or i believe so