True pr False
a) When performing a hypothesis for a population mean it is not necessary to obtain a simple random sample.
b) The area under a normal distribution curve is 1 but the area under a uniform
distribution curve is 2
c) The formula Z=(x- mean)/sigma doesn’t work for a standard normal distribution.
d) The presence of outliers has very little (if any) effect on a regression equation

your answer would be b

step-by-step explanation:

5050

hope this !

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'.

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x