A study of fast-food intake is described in a paper. Adult customers at three hamburger chains at lunchtime in New York City were approached as they entered the restaurant and asked to provide their receipt when exiting. The receipts were then used to determine what was purchased and the number of calories consumed was determined. In all, 3,853 people participated in the study. The sample mean number of calories consumed was 854 and the sample standard deviation was 678. Required:
a. The sample standard deviation is quite large. What does this tell you about number of calories consumed in a hamburger-chain lunchtime fast-food purchase in New York City?
b. Given the values of the sample mean and standard deviation and the fact that the number of calories consumed can’t be negative, explain why it is not reasonable to assume that the distribution of calories consumed is normal.

it’s supposed to be -4+45=41

step-by-step explanation:

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'.

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.