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B. 11

Step-by-step explanation:

Every line with a mark is 11.

so in the image attached you can see that all you need to do is plug in the numbers

x → 11

The probability would be 0.1193.

We compute the z-score for each end of this interval.  For the lower end, 66 inches,

z = (X-μ)/σ = (66-68)/3 = -2/3 = -0.67

For the upper end, 67 inches,

z = (X-μ)/σ = (67-68)/3 = -1/3 = -0.33

we find the area to the left of (lower than) the lower limit is 0.2514.  The area to the left of (lower than) the upper limit is 0.3707.  To find the area between these, we subtract:

0.3707 - 0.2514 = 0.1193.

Step-by-step explanation: