Urgent 20 describe how to sketch a normal curve with a mean of 50 and a standard deviation of 2. indicate how you would label the horizontal axis at 1, 2, and 3 standard deviations from the mean

Step-by-step explanation:

Draw a generic normal curve.  Subdivide the x-axis on each side of the center (mean) into four approx. = parts.

Label the mean with '50.'

1 std. dev. below the mean would be 50-2 = 48;

2 std. dev.                             would be 48-2= 46, and

3 std dev.                               would be 46 - 2 = 44

Do the same on the other side of the mean.  

The 3 corresponding values will be 52, 54 and 56.

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

mxb67

step-by-step explanation: