Answer:
The 1/4th power means the 4th root of a number.
Therefore for the first question, the answer should be 4th root of 1296 -4th root of 625. or \sqrt[4]{1296}
4
1296
-\sqrt[4]{625}
4
625
:D
For the second question just calculate? what to the 4th power is 1296 and what to the 4th power is 625?
They should respectively be 6 and 5. So the final answers we get is 6-5=1
If you have any questions about this just ask me in the comment and I will get to it as soon as I could.
hopecthis helps
Answer: 6
Step-by-step explanation:
Answer:
The cutoff value for the top 5% of all IQs is 131.255.
Step-by-step explanation:
When the distribution is normal, we use 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 question, we have that:

What is the cutoff value for the top 5% of all IQs
This is the 100 - 5 = 95th percentile, which is X when Z has a pvalue of 0.95. So X when Z = 1.645.




The cutoff value for the top 5% of all IQs is 131.255.