13.) The heights (in inches) of males in the United States are believed to be approximately normally

distributed with mean u. The mean height of a random sample of 25 adult American males is found to

be x = 69.72 inches and the standard deviation is 4.15 inches. What is the standard error of x?

a) 0.170

b) 0.690

c) 0.830

d) 1.836

e) 2.040

Option C) 0.830                                            

Step-by-step explanation:

We are given the following in the question:

The heights (in inches) of males in the United States are believed to be approximately normally   distributed with mean .

Sample size, n = 25

Sample mean, = 69.72 inches

Standard deviation, = 4.15 inches

We have to find the standard error of .

Standard error =

Thus, the standard error of is 0.83 inches.

The correct answer is

Option C) 0.830

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.