The mean weight of a certain cat breed is 10.5 pounds and the standard deviation is 1.2 pounds. The weights are normally distributed. P(weight is greater than 10 pounds) *

Step-by-step explanation:

Given points:

3, 2.25,  opposite of 4, -(-1 1/2) ⇒ 3, 2.25, -4, 1 1/2

In ascending order:

-4, 1.5, 2,25, 3

Using o,25 intervals:

-4.00, -3.75, --3.50, -3.25, -3.00, -2.75, -2.50, -2.25, -2.00, -1.75, -1.50, -1.25, -1.00, -0.75, -0.50, -0.25, 0, 0.25, 0.50, 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.25, 2.50, 2.75, 3.00

Plotted tick marks

-4.00, 1.50, 2.25, 3.00

Number of marks

between: -4.00 and 1.50 = 21

between: 1.50 and 2.25 = 2

between: 2.25 and 3.00 = 2