7. On a group trip to a certain city, 20 people who were 25 years old, 20 people who were 30 years
old, and 20 people who were 35 years old
purchased tickets for a bus tour of the city. No
one else purchased tickets for the bus tour. A
30-year old who had purchased a ticket became
ill and did not go on the bus tour, and everyone
else who purchased a ticket went on the bus tour.
Which of the following statements is true?
(A) The standard deviation of the ages of the
people who went on the bus tour is greater
than the standard deviation of the ages of
the people who purchased tickets.
(B) The standard deviation of the ages of the
people who went on the bus tour is less than
the standard deviation of the ages of the
people who purchased tickets.
(C) The standard deviation of the ages of the
people who went on the bus tour is equal to
the standard deviation of the ages of the
people who purchased tickets.
(D) There is not enough information to
determine which standard deviation is
greater.

answer: f = 32.2m

step-by-step explanation: that is the answer

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.

a long term investor

step-by-step explanation:

because he is a long term investor