Answer:
a) 0.16
b) 0.0518
c)
Step-by-step explanation:
Problems of normally distributed samples are 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.
For a proportion p in a sample of size n, we have that the mean is and the standard deviation is
In this problem, we have that:
a. Find the mean of p, where p is the proportion of minority member applications in a random sample of 2100 that is drawn from all applications.
The mean of p is 0.16.
b. Find the standard deviation of p.
c. Compute an approximation for P ( p leq 0.15), which is the probability that there will be 15% or fewer minority member applications in a random sample of 2100 drawn from all applications. Round your answer to four decimal places.
This is the pvalue of Z when X = 0.15. So
has a pvalue of 0.4247
Answer:
-35x + 21w + 7
Step-by-step explanation:
Basically all you have to do is multiply the -7 by all of the values inside of the parenthesis. The subtraction sign in front of the 3w and 1 made them negative numbers, when you multiple two negative numbers they become positive.
Answer:
x = -3.5
Step-by-step explanation:
3 x 2 + 2x + 1 = 0
6 + 2x + 1 = 0
2x + 7 = 0
2x = -7
x = -7/2 = -3.5
Hope this helped! If not, please let me know! <3
Hey there! :D
First, we need to solve the absolute value.
|s-14| <0.5
Keep the s-14 the same, and make the 0.5 the same for one solution, and flip the sign and make 0.5 negatives for the other solution.
s-14 <0.5
s-14>-0.5
(first solution)
s-14<0.5
Add 14 to both sides.
s<14.5
(second solution)
s-14>-0.5
Add 14 to both sides.
s>13.5
The solutions are:
s<14.5; s>13.5
I hope this helps!
~kaikers
Answer:
18$ you're welcome!
Step-by-step explanation: