Answer:
0.025 is the standard error of mean.
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 100
Sample mean = 13 psi
Population standard deviation = 0.25 psi
We have to find the standard error of the mean.
Formula:
Standard error =

0.025 is the standard error of mean.
C is the only one greater than 12.5 i think so
also b and d
Based on the given details you have given, the total amount of money that you will have will be measured in dollars ($). Since the given value is also in dollars which is $2, therefore, the total amount of money you will have is also in dollars which is 250 x $2 is $500 in total. Hope this answers the question.
The best way to approach this problem is to start off by doing factor by grouping.
4 + y = 19
y = 19 - 4
y = 15