Answer:
The correct option is e.
Explanation:
p-value is the probability value for a given statistical model, the probability that, when the null hypothesis is true.
For two two samples the formula of test statistics is

where,
is sample mean
is population mean.
is standard deviation.
n is sample size.
Variance is the square of standard deviation.
It means variance, mean, numbers of samples is used in calculation of p-value.
Degree of freedom define the shape of the t-distribution that your t-test uses to calculate the p-value.

p-value of a statistical test depends on all of the following, except median.
Therefore the correct option is e.
Answer:
used=Evaporation and sublimation
released=condensation and freezing
Explanation:
For it to be the same element it must contain the same number of protons
Empirical formula is the simplest way the molecular formula can be wrote so here 7 goes into all of these so it would be CH2O