Mathematics: X^2+1/x^2=18 find x-1/x

There is a 0.13% probability that the random sample of 100 nontraditional students have a mean GPA greater than 3.65.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 byAfter 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. Subtracting...

X^2+1/x^2=18 find x-1/x - id2121816864806, thedragontale1020

Ответ:

yettionajetti

27.09.2022

Mathematics

There is a 0.13% probability that the random sample of 100 nontraditional students have a mean GPA greater than 3.65.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = \frac{X - \mu}{\sigma}$

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. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

For this problem, we have that:

Based on the study results, we can assume the population mean and standard deviation for the GPA of nontraditional students is $\mu = 3.5$ and $\sigma = 0.5$ .